257026734 has 12 divisors (see below), whose sum is σ = 556891296. Its totient is φ = 85675572.

The previous prime is 257026729. The next prime is 257026747. The reversal of 257026734 is 437620752.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7139614 + ... + 7139649.

It is an arithmetic number, because the mean of its divisors is an integer number (46407608).

Almost surely, 2^257026734 is an apocalyptic number.

257026734 is an abundant number, since it is smaller than the sum of its proper divisors (299864562).

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

257026734 is a wasteful number, since it uses less digits than its factorization.

257026734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14279271 (or 14279268 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 257026734 is about 16032.0533307496. The cubic root of 257026734 is about 635.8081627422.

The spelling of 257026734 in words is "two hundred fifty-seven million, twenty-six thousand, seven hundred thirty-four".