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80994765 = 355399651
BaseRepresentation
bin1001101001111…
…10000111001101
312122101221221010
410310332013031
5131213313030
612011555433
72002305225
oct464760715
9178357833
1080994765
11417a0625
122315bb79
1313a1b0c7
14aa85085
15719d6b0
hex4d3e1cd

80994765 has 8 divisors (see below), whose sum is σ = 129591648. Its totient is φ = 43197200.

The previous prime is 80994751. The next prime is 80994773. The reversal of 80994765 is 56749908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80994765 - 28 = 80994509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2699811 + ... + 2699840.

It is an arithmetic number, because the mean of its divisors is an integer number (16198956).

Almost surely, 280994765 is an apocalyptic number.

It is an amenable number.

80994765 is a deficient number, since it is larger than the sum of its proper divisors (48596883).

80994765 is a wasteful number, since it uses less digits than its factorization.

80994765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399659.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 80994765 is about 8999.7091619674. The cubic root of 80994765 is about 432.6655496859.

The spelling of 80994765 in words is "eighty million, nine hundred ninety-four thousand, seven hundred sixty-five".

Divisors: 1 3 5 15 5399651 16198953 26998255 80994765