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57879467490 = 23513148408891
BaseRepresentation
bin110101111001111000…
…101001010111100010
312112101201102121000010
4311321320221113202
51422014120424430
642331153505350
74116210233115
oct657170512742
9175351377003
1057879467490
11226014a5659
12b273872256
1355c5330720
142b30dc057c
15178b4d1cb0
hexd79e295e2

57879467490 has 32 divisors (see below), whose sum is σ = 149596163136. Its totient is φ = 14247253440.

The previous prime is 57879467479. The next prime is 57879467509. The reversal of 57879467490 is 9476497875.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74204056 + ... + 74204835.

It is an arithmetic number, because the mean of its divisors is an integer number (4674880098).

Almost surely, 257879467490 is an apocalyptic number.

57879467490 is an abundant number, since it is smaller than the sum of its proper divisors (91716695646).

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

57879467490 is a wasteful number, since it uses less digits than its factorization.

57879467490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148408914.

The product of its (nonzero) digits is 106686720, while the sum is 66.

The spelling of 57879467490 in words is "fifty-seven billion, eight hundred seventy-nine million, four hundred sixty-seven thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 148408891 296817782 445226673 742044455 890453346 1484088910 1929315583 2226133365 3858631166 4452266730 5787946749 9646577915 11575893498 19293155830 28939733745 57879467490