257026036 has 12 divisors (see below), whose sum is σ = 449956612. Its totient is φ = 128467008.

The previous prime is 257026031. The next prime is 257026039. The reversal of 257026036 is 630620752.

It can be written as a sum of positive squares in 2 ways, for example, as 189062500 + 67963536 = 13750^2 + 8244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257025989 and 257026007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257026031) 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, 3136 + ... + 22888.

Almost surely, 2^257026036 is an apocalyptic number.

It is an amenable number.

257026036 is a deficient number, since it is larger than the sum of its proper divisors (192930576).

257026036 is a wasteful number, since it uses less digits than its factorization.

257026036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23010 (or 23008 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 257026036 is about 16032.0315618452. The cubic root of 257026036 is about 635.8075871931.

Adding to 257026036 its reverse (630620752), we get a palindrome (887646788).

The spelling of 257026036 in words is "two hundred fifty-seven million, twenty-six thousand, thirty-six".