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13912860 = 22351317837
BaseRepresentation
bin110101000100…
…101100011100
3222011211212010
4311010230130
512030202420
61214111220
7226154163
oct65045434
928154763
1013912860
117942a35
1247ab510
132b61880
141bc23da
15134c4e0
hexd44b1c

13912860 has 48 divisors (see below), whose sum is σ = 41954976. Its totient is φ = 3424512.

The previous prime is 13912859. The next prime is 13912867. The reversal of 13912860 is 6821931.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13912867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8139 + ... + 9698.

It is an arithmetic number, because the mean of its divisors is an integer number (874062).

Almost surely, 213912860 is an apocalyptic number.

13912860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13912860 is an abundant number, since it is smaller than the sum of its proper divisors (28042116).

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

13912860 is a wasteful number, since it uses less digits than its factorization.

13912860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17862 (or 17860 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 13912860 is about 3729.9946380659. The cubic root of 13912860 is about 240.5131382008.

The spelling of 13912860 in words is "thirteen million, nine hundred twelve thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 17837 35674 53511 71348 89185 107022 178370 214044 231881 267555 356740 463762 535110 695643 927524 1070220 1159405 1391286 2318810 2782572 3478215 4637620 6956430 13912860