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131348400 = 24352234759
BaseRepresentation
bin1111101010000…
…11011110110000
3100011011012010120
413311003132300
5232111122100
621011130240
73153304641
oct765033660
9304135116
10131348400
1168162aa7
1237ba3980
132129b461
14136316c8
15b7e80a0
hex7d437b0

131348400 has 120 divisors (see below), whose sum is σ = 439138560. Its totient is φ = 33496320.

The previous prime is 131348317. The next prime is 131348401. The reversal of 131348400 is 4843131.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (131348401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25221 + ... + 29979.

It is an arithmetic number, because the mean of its divisors is an integer number (3659488).

Almost surely, 2131348400 is an apocalyptic number.

131348400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131348400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219569280).

131348400 is an abundant number, since it is smaller than the sum of its proper divisors (307790160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131348400 is a wasteful number, since it uses less digits than its factorization.

131348400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803 (or 4792 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 131348400 is about 11460.7329608538. The cubic root of 131348400 is about 508.3251478272.

The spelling of 131348400 in words is "one hundred thirty-one million, three hundred forty-eight thousand, four hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 23 24 25 30 40 46 48 50 60 69 75 80 92 100 115 120 138 150 184 200 230 240 276 300 345 368 400 460 552 575 600 690 920 1104 1150 1200 1380 1725 1840 2300 2760 3450 4600 4759 5520 6900 9200 9518 13800 14277 19036 23795 27600 28554 38072 47590 57108 71385 76144 95180 109457 114216 118975 142770 190360 218914 228432 237950 285540 328371 356925 380720 437828 475900 547285 571080 656742 713850 875656 951800 1094570 1142160 1313484 1427700 1641855 1751312 1903600 2189140 2626968 2736425 2855400 3283710 4378280 5253936 5472850 5710800 6567420 8209275 8756560 10945700 13134840 16418550 21891400 26269680 32837100 43782800 65674200 131348400