257101228 has 24 divisors (see below), whose sum is σ = 465597440. Its totient is φ = 124094160.

The previous prime is 257101181. The next prime is 257101237. The reversal of 257101228 is 822101752.

It is a super-2 number, since 2×257101228² = 132202082878215968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257101196 and 257101205.

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, 52075 + ... + 56797.

Almost surely, 2^257101228 is an apocalyptic number.

It is an amenable number.

257101228 is a deficient number, since it is larger than the sum of its proper divisors (208496212).

257101228 is a wasteful number, since it uses less digits than its factorization.

257101228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5197 (or 5195 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 257101228 is about 16034.3764456246. The cubic root of 257101228 is about 635.8695821874.

The spelling of 257101228 in words is "two hundred fifty-seven million, one hundred one thousand, two hundred twenty-eight".