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13902917 = 721671699
BaseRepresentation
bin110101000010…
…010001000101
3222011100012212
4311002101011
512024343132
61213553205
7226113200
oct65022105
928140185
1013902917
117936516
1247a5805
132b5a1a2
141bbc937
1513495b2
hexd42445

13902917 has 12 divisors (see below), whose sum is σ = 16279200. Its totient is φ = 11838456.

The previous prime is 13902893. The next prime is 13902943. The reversal of 13902917 is 71920931.

It is a happy number.

It is not a de Polignac number, because 13902917 - 26 = 13902853 is a prime.

It is a super-2 number, since 2×139029172 = 386582202217778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13902947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7334 + ... + 9032.

It is an arithmetic number, because the mean of its divisors is an integer number (1356600).

Almost surely, 213902917 is an apocalyptic number.

It is an amenable number.

13902917 is a deficient number, since it is larger than the sum of its proper divisors (2376283).

13902917 is a wasteful number, since it uses less digits than its factorization.

13902917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880 (or 1873 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 13902917 is about 3728.6615561083. The cubic root of 13902917 is about 240.4558293023.

The spelling of 13902917 in words is "thirteen million, nine hundred two thousand, nine hundred seventeen".

Divisors: 1 7 49 167 1169 1699 8183 11893 83251 283733 1986131 13902917