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131966072 = 237103137167
BaseRepresentation
bin1111101110110…
…10010001111000
3100012022120102022
413313122101320
5232240403242
621032254012
73161456510
oct767322170
9305276368
10131966072
1168545077
1238241308
1321456644
1413752840
15b8bb0d2
hex7dda478

131966072 has 64 divisors (see below), whose sum is σ = 289336320. Its totient is φ = 55266048.

The previous prime is 131966063. The next prime is 131966089. The reversal of 131966072 is 270669131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 790133 + ... + 790299.

It is an arithmetic number, because the mean of its divisors is an integer number (4520880).

Almost surely, 2131966072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131966072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144668160).

131966072 is an abundant number, since it is smaller than the sum of its proper divisors (157370248).

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

131966072 is a wasteful number, since it uses less digits than its factorization.

131966072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 131966072 is about 11487.6486715080. The cubic root of 131966072 is about 509.1207096733.

The spelling of 131966072 in words is "one hundred thirty-one million, nine hundred sixty-six thousand, seventy-two".

Divisors: 1 2 4 7 8 14 28 56 103 137 167 206 274 334 412 548 668 721 824 959 1096 1169 1336 1442 1918 2338 2884 3836 4676 5768 7672 9352 14111 17201 22879 28222 34402 45758 56444 68804 91516 98777 112888 120407 137608 160153 183032 197554 240814 320306 395108 481628 640612 790216 963256 1281224 2356537 4713074 9426148 16495759 18852296 32991518 65983036 131966072