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392057 = 3112647
BaseRepresentation
bin1011111101101111001
3201220210122
41133231321
5100021212
612223025
73222011
oct1375571
9656718
10392057
11248616
1216aa75
131095b3
14a2c41
157b272
hex5fb79

392057 has 4 divisors (see below), whose sum is σ = 404736. Its totient is φ = 379380.

The previous prime is 392053. The next prime is 392059. The reversal of 392057 is 750293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 750293 = 3124203.

It is a cyclic number.

It is not a de Polignac number, because 392057 - 22 = 392053 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 392057.

It is not an unprimeable number, because it can be changed into a prime (392053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6293 + ... + 6354.

It is an arithmetic number, because the mean of its divisors is an integer number (101184).

2392057 is an apocalyptic number.

It is an amenable number.

392057 is a deficient number, since it is larger than the sum of its proper divisors (12679).

392057 is a wasteful number, since it uses less digits than its factorization.

392057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12678.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 392057 is about 626.1445520006. The cubic root of 392057 is about 73.1896613147.

The spelling of 392057 in words is "three hundred ninety-two thousand, fifty-seven".

Divisors: 1 31 12647 392057