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57488920 = 2351437223
BaseRepresentation
bin1101101101001…
…1011000011000
311000011201222021
43123103120120
5104204121140
65412104224
71265435116
oct333233030
9130151867
1057488920
112a4a6305
1217305074
13bbab018
1478c6ab6
1550a8b4a
hex36d3618

57488920 has 16 divisors (see below), whose sum is σ = 129350160. Its totient is φ = 22995552.

The previous prime is 57488869. The next prime is 57488939. The reversal of 57488920 is 2988475.

57488920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718572 + ... + 718651.

It is an arithmetic number, because the mean of its divisors is an integer number (8084385).

Almost surely, 257488920 is an apocalyptic number.

It is an amenable number.

57488920 is an abundant number, since it is smaller than the sum of its proper divisors (71861240).

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

57488920 is a wasteful number, since it uses less digits than its factorization.

57488920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437234 (or 1437230 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 57488920 is about 7582.1448152881. The cubic root of 57488920 is about 385.9473381583.

The spelling of 57488920 in words is "fifty-seven million, four hundred eighty-eight thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 1437223 2874446 5748892 7186115 11497784 14372230 28744460 57488920