257232446 has 4 divisors (see below), whose sum is σ = 385848672. Its totient is φ = 128616222.

The previous prime is 257232403. The next prime is 257232461. The reversal of 257232446 is 644232752.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64308110 + ... + 64308113.

It is an arithmetic number, because the mean of its divisors is an integer number (96462168).

Almost surely, 2^257232446 is an apocalyptic number.

257232446 is a deficient number, since it is larger than the sum of its proper divisors (128616226).

257232446 is a wasteful number, since it uses less digits than its factorization.

257232446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128616225.

The product of its digits is 80640, while the sum is 35.

The square root of 257232446 is about 16038.4676948891. The cubic root of 257232446 is about 635.9777410693.

The spelling of 257232446 in words is "two hundred fifty-seven million, two hundred thirty-two thousand, four hundred forty-six".