257272038 has 40 divisors (see below), whose sum is σ = 595087680. Its totient is φ = 82989360.

The previous prime is 257272019. The next prime is 257272049. The reversal of 257272038 is 830272752.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 257271993 and 257272011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20593 + ... + 30636.

It is an arithmetic number, because the mean of its divisors is an integer number (14877192).

Almost surely, 2^257272038 is an apocalyptic number.

257272038 is an abundant number, since it is smaller than the sum of its proper divisors (337815642).

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

257272038 is a wasteful number, since it uses less digits than its factorization.

257272038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51274 (or 51265 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 257272038 is about 16039.7019298988. The cubic root of 257272038 is about 636.0103682895.

The spelling of 257272038 in words is "two hundred fifty-seven million, two hundred seventy-two thousand, thirty-eight".