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557998680 = 23356477187
BaseRepresentation
bin100001010000100…
…110001001011000
31102212222021021210
4201100212021120
52120321424210
6131211503120
716553624211
oct4120461130
91385867253
10557998680
11266a80738
12136a57aa0
138b7b1145
1454172408
1533ec2e20
hex21426258

557998680 has 64 divisors (see below), whose sum is σ = 1676816640. Its totient is φ = 148548992.

The previous prime is 557998673. The next prime is 557998717. The reversal of 557998680 is 86899755.

It is a super-2 number, since 2×5579986802 = 622725053763484800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 557998680.

It is a congruent number.

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, 74047 + ... + 81233.

It is an arithmetic number, because the mean of its divisors is an integer number (26200260).

Almost surely, 2557998680 is an apocalyptic number.

It is an amenable number.

557998680 is an abundant number, since it is smaller than the sum of its proper divisors (1118817960).

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

557998680 is a wasteful number, since it uses less digits than its factorization.

557998680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7848 (or 7844 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 57.

The square root of 557998680 is about 23621.9956819910. The cubic root of 557998680 is about 823.2739818913.

The spelling of 557998680 in words is "five hundred fifty-seven million, nine hundred ninety-eight thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 647 1294 1941 2588 3235 3882 5176 6470 7187 7764 9705 12940 14374 15528 19410 21561 25880 28748 35935 38820 43122 57496 71870 77640 86244 107805 143740 172488 215610 287480 431220 862440 4649989 9299978 13949967 18599956 23249945 27899934 37199912 46499890 55799868 69749835 92999780 111599736 139499670 185999560 278999340 557998680