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80995938 = 23109271457
BaseRepresentation
bin1001101001111…
…10011001100010
312122102000112120
410310332121202
5131213332223
612012005110
72002311522
oct464763142
9178360476
1080995938
11417a14a1
1223160796
1313a1b7ba
14aa85682
15719dbe3
hex4d3e662

80995938 has 32 divisors (see below), whose sum is σ = 164440320. Its totient is φ = 26593920.

The previous prime is 80995921. The next prime is 80995979. The reversal of 80995938 is 83959908.

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, 177006 + ... + 177462.

It is an arithmetic number, because the mean of its divisors is an integer number (5138760).

Almost surely, 280995938 is an apocalyptic number.

80995938 is an abundant number, since it is smaller than the sum of its proper divisors (83444382).

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

80995938 is a wasteful number, since it uses less digits than its factorization.

80995938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 80995938 is about 8999.7743305041. The cubic root of 80995938 is about 432.6676383568.

The spelling of 80995938 in words is "eighty million, nine hundred ninety-five thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 109 218 271 327 457 542 654 813 914 1371 1626 2742 29539 49813 59078 88617 99626 123847 149439 177234 247694 298878 371541 743082 13499323 26998646 40497969 80995938