257219068 has 12 divisors (see below), whose sum is σ = 450257472. Its totient is φ = 128574080.

The previous prime is 257219063. The next prime is 257219089. The reversal of 257219068 is 860912752.

It is a self number, because there is not a number n which added to its sum of digits gives 257219068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257219063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14028 + ... + 26668.

It is an arithmetic number, because the mean of its divisors is an integer number (37521456).

Almost surely, 2^257219068 is an apocalyptic number.

It is an amenable number.

257219068 is a deficient number, since it is larger than the sum of its proper divisors (193038404).

257219068 is a wasteful number, since it uses less digits than its factorization.

257219068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17732 (or 17730 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 257219068 is about 16038.0506296744. The cubic root of 257219068 is about 635.9667156876.

The spelling of 257219068 in words is "two hundred fifty-seven million, two hundred nineteen thousand, sixty-eight".