Search a number
-
+
57147992 = 23115312253
BaseRepresentation
bin1101101000000…
…0001001011000
310222112102022022
43122000021120
5104112213432
65400514012
71262515136
oct332001130
9128472268
1057147992
112a293150
121717b908
13babbaa5
147838756
15503cb12
hex3680258

57147992 has 32 divisors (see below), whose sum is σ = 119108880. Its totient is φ = 25484160.

The previous prime is 57147983. The next prime is 57148019. The reversal of 57147992 is 29974175.

It is a super-3 number, since 3×571479923 (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 1463 + ... + 10790.

Almost surely, 257147992 is an apocalyptic number.

It is an amenable number.

57147992 is an abundant number, since it is smaller than the sum of its proper divisors (61960888).

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

57147992 is a wasteful number, since it uses less digits than its factorization.

57147992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12323 (or 12319 counting only the distinct ones).

The product of its digits is 158760, while the sum is 44.

The square root of 57147992 is about 7559.6290914303. The cubic root of 57147992 is about 385.1828939313.

The spelling of 57147992 in words is "fifty-seven million, one hundred forty-seven thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 11 22 44 53 88 106 212 424 583 1166 2332 4664 12253 24506 49012 98024 134783 269566 539132 649409 1078264 1298818 2597636 5195272 7143499 14286998 28573996 57147992