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80623631 = 1121935069
BaseRepresentation
bin1001100111000…
…11100000001111
312121201002211102
410303203200033
5131114424011
612000013315
71666201214
oct463434017
9177632742
1080623631
1141567800
122300123b
131391b1ba
14a9c9b0b
15712873b
hex4ce380f

80623631 has 12 divisors (see below), whose sum is σ = 93286200. Its totient is φ = 69434640.

The previous prime is 80623619. The next prime is 80623649. The reversal of 80623631 is 13632608.

It is a de Polignac number, because none of the positive numbers 2k-80623631 is a prime.

It is a super-2 number, since 2×806236312 = 13000339751248322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80623594 and 80623603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80623601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15236 + ... + 19833.

It is an arithmetic number, because the mean of its divisors is an integer number (7773850).

Almost surely, 280623631 is an apocalyptic number.

80623631 is a deficient number, since it is larger than the sum of its proper divisors (12662569).

80623631 is a wasteful number, since it uses less digits than its factorization.

80623631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35110 (or 35099 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 80623631 is about 8979.0662654866. The cubic root of 80623631 is about 432.0036847394.

The spelling of 80623631 in words is "eighty million, six hundred twenty-three thousand, six hundred thirty-one".

Divisors: 1 11 19 121 209 2299 35069 385759 666311 4243349 7329421 80623631