257861348 has 24 divisors (see below), whose sum is σ = 466497024. Its totient is φ = 124588800.

The previous prime is 257861347. The next prime is 257861363. The reversal of 257861348 is 843168752.

It is a junction number, because it is equal to n+sod(n) for n = 257861299 and 257861308.

It is not an unprimeable number, because it can be changed into a prime (257861347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126836 + ... + 128852.

It is an arithmetic number, because the mean of its divisors is an integer number (19437376).

Almost surely, 2^257861348 is an apocalyptic number.

It is an amenable number.

257861348 is a deficient number, since it is larger than the sum of its proper divisors (208635676).

257861348 is a wasteful number, since it uses less digits than its factorization.

257861348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083 (or 3081 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 257861348 is about 16058.0617759429. The cubic root of 257861348 is about 636.4956152905.

The spelling of 257861348 in words is "two hundred fifty-seven million, eight hundred sixty-one thousand, three hundred forty-eight".