257393426 has 8 divisors (see below), whose sum is σ = 388402560. Its totient is φ = 127925908.

The previous prime is 257393419. The next prime is 257393443. The reversal of 257393426 is 624393752.

257393426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384986 + ... + 385653.

It is an arithmetic number, because the mean of its divisors is an integer number (48550320).

Almost surely, 2^257393426 is an apocalyptic number.

257393426 is a deficient number, since it is larger than the sum of its proper divisors (131009134).

257393426 is a wasteful number, since it uses less digits than its factorization.

257393426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770808.

The product of its digits is 272160, while the sum is 41.

The square root of 257393426 is about 16043.4854691866. The cubic root of 257393426 is about 636.1103816036.

The spelling of 257393426 in words is "two hundred fifty-seven million, three hundred ninety-three thousand, four hundred twenty-six".