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80731914 = 2361220579
BaseRepresentation
bin1001100111111…
…01111100001010
312121220121100220
410303331330022
5131131410124
612002210510
72000132004
oct463757412
9177817326
1080731914
114163109a
1223053a36
1313958583
14aa17374
15714a879
hex4cfdf0a

80731914 has 16 divisors (see below), whose sum is σ = 164111520. Its totient is φ = 26469360.

The previous prime is 80731913. The next prime is 80731933. The reversal of 80731914 is 41913708.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80731913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109924 + ... + 110655.

It is an arithmetic number, because the mean of its divisors is an integer number (10256970).

Almost surely, 280731914 is an apocalyptic number.

80731914 is an abundant number, since it is smaller than the sum of its proper divisors (83379606).

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

80731914 is a wasteful number, since it uses less digits than its factorization.

80731914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220645.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 80731914 is about 8985.0939894917. The cubic root of 80731914 is about 432.1970016273.

The spelling of 80731914 in words is "eighty million, seven hundred thirty-one thousand, nine hundred fourteen".

Divisors: 1 2 3 6 61 122 183 366 220579 441158 661737 1323474 13455319 26910638 40365957 80731914