257889484 has 6 divisors (see below), whose sum is σ = 451306604. Its totient is φ = 128944740.

The previous prime is 257889481. The next prime is 257889487. The reversal of 257889484 is 484988752.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (257889481) and next prime (257889487).

It is not an unprimeable number, because it can be changed into a prime (257889481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32236182 + ... + 32236189.

Almost surely, 2^257889484 is an apocalyptic number.

It is an amenable number.

257889484 is a deficient number, since it is larger than the sum of its proper divisors (193417120).

257889484 is a wasteful number, since it uses less digits than its factorization.

257889484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64472375 (or 64472373 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 55.

The square root of 257889484 is about 16058.9378229072. The cubic root of 257889484 is about 636.5187644098.

The spelling of 257889484 in words is "two hundred fifty-seven million, eight hundred eighty-nine thousand, four hundred eighty-four".