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51206960 = 2457213063
BaseRepresentation
bin1100001101010…
…1101100110000
310120100120202002
43003111230300
5101102110320
65025313132
71161152300
oct303255460
9116316662
1051206960
11269a5602
12151957a8
13a7bb89c
146b2d600
154767675
hex30d5b30

51206960 has 60 divisors (see below), whose sum is σ = 138504528. Its totient is φ = 17555328.

The previous prime is 51206921. The next prime is 51206971. The reversal of 51206960 is 6960215.

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, 2612 + ... + 10451.

Almost surely, 251206960 is an apocalyptic number.

It is an amenable number.

51206960 is an abundant number, since it is smaller than the sum of its proper divisors (87297568).

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

51206960 is a wasteful number, since it uses less digits than its factorization.

51206960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13090 (or 13077 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 51206960 is about 7155.9038562574. The cubic root of 51206960 is about 371.3439316862.

The spelling of 51206960 in words is "fifty-one million, two hundred six thousand, nine hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 35 40 49 56 70 80 98 112 140 196 245 280 392 490 560 784 980 1960 3920 13063 26126 52252 65315 91441 104504 130630 182882 209008 261260 365764 457205 522520 640087 731528 914410 1045040 1280174 1463056 1828820 2560348 3200435 3657640 5120696 6400870 7315280 10241392 12801740 25603480 51206960