257234424 has 32 divisors (see below), whose sum is σ = 644058240. Its totient is φ = 85615200.

The previous prime is 257234423. The next prime is 257234477. The reversal of 257234424 is 424432752.

It is a super-2 number, since 2×257234424² = 132339097781223552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257234423) 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, 8829 + ... + 24339.

It is an arithmetic number, because the mean of its divisors is an integer number (20126820).

Almost surely, 2^257234424 is an apocalyptic number.

257234424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

257234424 is an abundant number, since it is smaller than the sum of its proper divisors (386823816).

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

257234424 is a wasteful number, since it uses less digits than its factorization.

257234424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16211 (or 16207 counting only the distinct ones).

The product of its digits is 53760, while the sum is 33.

The square root of 257234424 is about 16038.5293590154. The cubic root of 257234424 is about 635.9793711912.

The spelling of 257234424 in words is "two hundred fifty-seven million, two hundred thirty-four thousand, four hundred twenty-four".