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80680788 = 22324674799
BaseRepresentation
bin1001100111100…
…01011101010100
312121211000020100
410303301131110
5131123241123
612001134100
71666526646
oct463613524
9177730210
1080680788
11415a6741
122302a330
131393b216
14aa02896
15713a643
hex4cf1754

80680788 has 36 divisors (see below), whose sum is σ = 204422400. Its totient is φ = 26830416.

The previous prime is 80680777. The next prime is 80680823. The reversal of 80680788 is 88708608.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14413 + ... + 19211.

It is an arithmetic number, because the mean of its divisors is an integer number (5678400).

Almost surely, 280680788 is an apocalyptic number.

It is an amenable number.

80680788 is an abundant number, since it is smaller than the sum of its proper divisors (123741612).

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

80680788 is a wasteful number, since it uses less digits than its factorization.

80680788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5276 (or 5271 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 80680788 is about 8982.2484935566. The cubic root of 80680788 is about 432.1057482890.

The spelling of 80680788 in words is "eighty million, six hundred eighty thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 467 934 1401 1868 2802 4203 4799 5604 8406 9598 14397 16812 19196 28794 43191 57588 86382 172764 2241133 4482266 6723399 8964532 13446798 20170197 26893596 40340394 80680788