257103930 has 32 divisors (see below), whose sum is σ = 617549184. Its totient is φ = 68505536.

The previous prime is 257103911. The next prime is 257103947. The reversal of 257103930 is 39301752.

257103930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×257103930² = 132204861642889800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45544 + ... + 50876.

It is an arithmetic number, because the mean of its divisors is an integer number (19298412).

Almost surely, 2^257103930 is an apocalyptic number.

257103930 is an abundant number, since it is smaller than the sum of its proper divisors (360445254).

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

257103930 is a wasteful number, since it uses less digits than its factorization.

257103930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6950.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 257103930 is about 16034.4607018758. The cubic root of 257103930 is about 635.8718097323.

The spelling of 257103930 in words is "two hundred fifty-seven million, one hundred three thousand, nine hundred thirty".