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57998970 = 2335214811
BaseRepresentation
bin1101110100111…
…1111001111010
311001010122122000
43131033321322
5104321431340
65431041430
71302661131
oct335177172
9131118560
1057998970
112a814537
1217510276
13c029223
1479ba918
155159d30
hex374fe7a

57998970 has 32 divisors (see below), whose sum is σ = 154664640. Its totient is φ = 15466320.

The previous prime is 57998953. The next prime is 57998971. The reversal of 57998970 is 7989975.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (57998971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107136 + ... + 107675.

It is an arithmetic number, because the mean of its divisors is an integer number (4833270).

Almost surely, 257998970 is an apocalyptic number.

57998970 is an abundant number, since it is smaller than the sum of its proper divisors (96665670).

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

57998970 is a wasteful number, since it uses less digits than its factorization.

57998970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214827 (or 214821 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 57998970 is about 7615.7054827508. The cubic root of 57998970 is about 387.0853726682.

The spelling of 57998970 in words is "fifty-seven million, nine hundred ninety-eight thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 214811 429622 644433 1074055 1288866 1933299 2148110 3222165 3866598 5799897 6444330 9666495 11599794 19332990 28999485 57998970