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80111072 = 2517147263
BaseRepresentation
bin1001100011001…
…10010111100000
312120202001201202
410301212113200
5131002023242
611541020332
71661634656
oct461462740
9176661652
1080111072
11412476a8
12229b46a8
131379bb02
14a8d4dd6
157076932
hex4c665e0

80111072 has 24 divisors (see below), whose sum is σ = 166997376. Its totient is φ = 37699072.

The previous prime is 80111071. The next prime is 80111111. The reversal of 80111072 is 27011108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80111071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73088 + ... + 74175.

It is an arithmetic number, because the mean of its divisors is an integer number (6958224).

Almost surely, 280111072 is an apocalyptic number.

It is an amenable number.

80111072 is an abundant number, since it is smaller than the sum of its proper divisors (86886304).

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

80111072 is a wasteful number, since it uses less digits than its factorization.

80111072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147290 (or 147282 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 80111072 is about 8950.4788698706. The cubic root of 80111072 is about 431.0862602634.

The spelling of 80111072 in words is "eighty million, one hundred eleven thousand, seventy-two".

Divisors: 1 2 4 8 16 17 32 34 68 136 272 544 147263 294526 589052 1178104 2356208 2503471 4712416 5006942 10013884 20027768 40055536 80111072