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80745801 = 31719233623
BaseRepresentation
bin1001101000000…
…01010101001001
312121221022102020
410310001111021
5131132331201
612002355053
72000220333
oct464012511
9177838366
1080745801
1141640574
122305ba89
13139619a6
14aa1c453
15714ea36
hex4d01549

80745801 has 32 divisors (see below), whose sum is σ = 125245440. Its totient is φ = 45897984.

The previous prime is 80745781. The next prime is 80745809. The reversal of 80745801 is 10854708.

It is a happy number.

It is not a de Polignac number, because 80745801 - 26 = 80745737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80745809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20476 + ... + 24098.

It is an arithmetic number, because the mean of its divisors is an integer number (3913920).

Almost surely, 280745801 is an apocalyptic number.

It is an amenable number.

80745801 is a deficient number, since it is larger than the sum of its proper divisors (44499639).

80745801 is a wasteful number, since it uses less digits than its factorization.

80745801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 80745801 is about 8985.8667361585. The cubic root of 80745801 is about 432.2217814835.

The spelling of 80745801 in words is "eighty million, seven hundred forty-five thousand, eight hundred one".

Divisors: 1 3 17 19 23 51 57 69 323 391 437 969 1173 1311 3623 7429 10869 22287 61591 68837 83329 184773 206511 249987 1170229 1416593 1583251 3510687 4249779 4749753 26915267 80745801