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131202400 = 2552723347
BaseRepresentation
bin1111101000111…
…11110101100000
3100010212202212011
413310133311200
5232041434100
621004042304
73152126200
oct764376540
9303782764
10131202400
116807333a
1237b33394
1321249b74
14135d4400
15b7b9bba
hex7d1fd60

131202400 has 108 divisors (see below), whose sum is σ = 372702708. Its totient is φ = 44970240.

The previous prime is 131202367. The next prime is 131202431. The reversal of 131202400 is 4202131.

131202400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 37527 + ... + 40873.

It is an arithmetic number, because the mean of its divisors is an integer number (3450951).

Almost surely, 2131202400 is an apocalyptic number.

131202400 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 131202400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186351354).

131202400 is an abundant number, since it is smaller than the sum of its proper divisors (241500308).

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

131202400 is a wasteful number, since it uses less digits than its factorization.

131202400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 131202400 is about 11454.3616146863. The cubic root of 131202400 is about 508.1367354659.

Adding to 131202400 its reverse (4202131), we get a palindrome (135404531).

The spelling of 131202400 in words is "one hundred thirty-one million, two hundred two thousand, four hundred".

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 49 50 56 70 80 98 100 112 140 160 175 196 200 224 245 280 350 392 400 490 560 700 784 800 980 1120 1225 1400 1568 1960 2450 2800 3347 3920 4900 5600 6694 7840 9800 13388 16735 19600 23429 26776 33470 39200 46858 53552 66940 83675 93716 107104 117145 133880 164003 167350 187432 234290 267760 328006 334700 374864 468580 535520 585725 656012 669400 749728 820015 937160 1171450 1312024 1338800 1640030 1874320 2342900 2624048 2677600 3280060 3748640 4100075 4685800 5248096 6560120 8200150 9371600 13120240 16400300 18743200 26240480 32800600 65601200 131202400