257386132 has 12 divisors (see below), whose sum is σ = 460901056. Its totient is φ = 125700120.

The previous prime is 257386117. The next prime is 257386133. The reversal of 257386132 is 231683752.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 257386091 and 257386100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257386133) 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, 748044 + ... + 748387.

Almost surely, 2^257386132 is an apocalyptic number.

It is an amenable number.

257386132 is a deficient number, since it is larger than the sum of its proper divisors (203514924).

257386132 is a wasteful number, since it uses less digits than its factorization.

257386132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496478 (or 1496476 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 257386132 is about 16043.2581478950. The cubic root of 257386132 is about 636.1043728605.

The spelling of 257386132 in words is "two hundred fifty-seven million, three hundred eighty-six thousand, one hundred thirty-two".