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57904230 = 2354344887
BaseRepresentation
bin1101110011100…
…0110001100110
311000221211200010
43130320301212
5104310413410
65425031050
71302114666
oct334706146
9130854603
1057904230
112a75a33a
1217485486
13bcc5077
1479941a6
15513bc20
hex3738c66

57904230 has 32 divisors (see below), whose sum is σ = 142205184. Its totient is φ = 15081696.

The previous prime is 57904211. The next prime is 57904241. The reversal of 57904230 is 3240975.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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, 21154 + ... + 23733.

It is an arithmetic number, because the mean of its divisors is an integer number (4443912).

Almost surely, 257904230 is an apocalyptic number.

57904230 is an abundant number, since it is smaller than the sum of its proper divisors (84300954).

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

57904230 is a wasteful number, since it uses less digits than its factorization.

57904230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44940.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 57904230 is about 7609.4828996457. The cubic root of 57904230 is about 386.8744927496.

The spelling of 57904230 in words is "fifty-seven million, nine hundred four thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 43 86 129 215 258 430 645 1290 44887 89774 134661 224435 269322 448870 673305 1346610 1930141 3860282 5790423 9650705 11580846 19301410 28952115 57904230