257542308 has 48 divisors (see below), whose sum is σ = 683242560. Its totient is φ = 83849472.

The previous prime is 257542303. The next prime is 257542349. The reversal of 257542308 is 803245752.

257542308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (257542303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23085 + ... + 32372.

It is an arithmetic number, because the mean of its divisors is an integer number (14234220).

Almost surely, 2^257542308 is an apocalyptic number.

It is an amenable number.

257542308 is an abundant number, since it is smaller than the sum of its proper divisors (425700252).

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

257542308 is a wasteful number, since it uses less digits than its factorization.

257542308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55513 (or 55505 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 257542308 is about 16048.1247502629. The cubic root of 257542308 is about 636.2330046937.

The spelling of 257542308 in words is "two hundred fifty-seven million, five hundred forty-two thousand, three hundred eight".