257067734 has 32 divisors (see below), whose sum is σ = 501659136. Its totient is φ = 95800320.

The previous prime is 257067731. The next prime is 257067743. The reversal of 257067734 is 437760752.

It is a junction number, because it is equal to n+sod(n) for n = 257067691 and 257067700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257067731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32747 + ... + 39830.

It is an arithmetic number, because the mean of its divisors is an integer number (15676848).

Almost surely, 2^257067734 is an apocalyptic number.

257067734 is a deficient number, since it is larger than the sum of its proper divisors (244591402).

257067734 is a wasteful number, since it uses less digits than its factorization.

257067734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72620.

The product of its (nonzero) digits is 246960, while the sum is 41.

The square root of 257067734 is about 16033.3319681219. The cubic root of 257067734 is about 635.8419682382.

The spelling of 257067734 in words is "two hundred fifty-seven million, sixty-seven thousand, seven hundred thirty-four".