257260430 has 16 divisors (see below), whose sum is σ = 529221600. Its totient is φ = 88203552.

The previous prime is 257260427. The next prime is 257260441. The reversal of 257260430 is 34062752.

It is a junction number, because it is equal to n+sod(n) for n = 257260393 and 257260402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1837505 + ... + 1837644.

It is an arithmetic number, because the mean of its divisors is an integer number (33076350).

Almost surely, 2^257260430 is an apocalyptic number.

257260430 is an abundant number, since it is smaller than the sum of its proper divisors (271961170).

257260430 is a wasteful number, since it uses less digits than its factorization.

257260430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675163.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 257260430 is about 16039.3400737063. The cubic root of 257260430 is about 636.0008026439. Note that the first 3 decimals are identical.

The spelling of 257260430 in words is "two hundred fifty-seven million, two hundred sixty thousand, four hundred thirty".