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20314872 = 2332283997
BaseRepresentation
bin100110101111…
…1101011111000
31102020002202200
41031133223320
520200033442
62003230200
7334450014
oct115375370
942202680
1020314872
1110515956
126978360
134293846
1429ab544
151bb434c
hex135faf8

20314872 has 48 divisors (see below), whose sum is σ = 55269240. Its totient is φ = 6740928.

The previous prime is 20314867. The next prime is 20314907. The reversal of 20314872 is 27841302.

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, 19878 + ... + 20874.

Almost surely, 220314872 is an apocalyptic number.

It is an amenable number.

20314872 is an abundant number, since it is smaller than the sum of its proper divisors (34954368).

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

20314872 is a wasteful number, since it uses less digits than its factorization.

20314872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292 (or 1285 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20314872 is about 4507.2022364212. The cubic root of 20314872 is about 272.8588410039.

It can be divided in two parts, 2031 and 4872, that added together give a triangular number (6903 = T117).

The spelling of 20314872 in words is "twenty million, three hundred fourteen thousand, eight hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 283 566 849 997 1132 1698 1994 2264 2547 2991 3396 3988 5094 5982 6792 7976 8973 10188 11964 17946 20376 23928 35892 71784 282151 564302 846453 1128604 1692906 2257208 2539359 3385812 5078718 6771624 10157436 20314872