Search a number
-
+
57742891460 = 22524111979853
BaseRepresentation
bin110101110001101111…
…101001100111000100
312112001012102210220122
4311301233221213010
51421224140011320
642305434321112
74112631323222
oct656157514704
9175035383818
1057742891460
11225413a2001
12b235b89198
1355a2c519c7
142b1abcbb12
15177e504d25
hexd71be99c4

57742891460 has 24 divisors (see below), whose sum is σ = 121763236056. Its totient is φ = 23001315840.

The previous prime is 57742891457. The next prime is 57742891471. The reversal of 57742891460 is 6419824775.

It can be written as a sum of positive squares in 4 ways, for example, as 28428657664 + 29314233796 = 168608^2 + 171214^2 .

It is a super-2 number, since 2×577428914602 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5985107 + ... + 5994746.

It is an arithmetic number, because the mean of its divisors is an integer number (5073468169).

Almost surely, 257742891460 is an apocalyptic number.

It is an amenable number.

57742891460 is an abundant number, since it is smaller than the sum of its proper divisors (64020344596).

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

57742891460 is a wasteful number, since it uses less digits than its factorization.

57742891460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11980103 (or 11980101 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 57742891460 in words is "fifty-seven billion, seven hundred forty-two million, eight hundred ninety-one thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 241 482 964 1205 2410 4820 11979853 23959706 47919412 59899265 119798530 239597060 2887144573 5774289146 11548578292 14435722865 28871445730 57742891460