257005914 has 16 divisors (see below), whose sum is σ = 560740320. Its totient is φ = 77880560.

The previous prime is 257005901. The next prime is 257005919. The reversal of 257005914 is 419500752.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (257005919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946949 + ... + 1947080.

It is an arithmetic number, because the mean of its divisors is an integer number (35046270).

Almost surely, 2^257005914 is an apocalyptic number.

257005914 is an abundant number, since it is smaller than the sum of its proper divisors (303734406).

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

257005914 is a wasteful number, since it uses less digits than its factorization.

257005914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894045.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 257005914 is about 16031.4039934124. The cubic root of 257005914 is about 635.7909947701.

The spelling of 257005914 in words is "two hundred fifty-seven million, five thousand, nine hundred fourteen".