257680034 has 8 divisors (see below), whose sum is σ = 386588160. Its totient is φ = 128817316.

The previous prime is 257680021. The next prime is 257680069. The reversal of 257680034 is 430086752.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 257679976 and 257680003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16847 + ... + 28269.

It is an arithmetic number, because the mean of its divisors is an integer number (48323520).

Almost surely, 2^257680034 is an apocalyptic number.

257680034 is a deficient number, since it is larger than the sum of its proper divisors (128908126).

257680034 is a wasteful number, since it uses less digits than its factorization.

257680034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22704.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 257680034 is about 16052.4152076876. The cubic root of 257680034 is about 636.3463973401.

The spelling of 257680034 in words is "two hundred fifty-seven million, six hundred eighty thousand, thirty-four".