253398784 has 18 divisors (see below), whose sum is σ = 505808240. Its totient is φ = 126699264.

The previous prime is 253398773. The next prime is 253398793. The reversal of 253398784 is 487893352.

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, 494664 + ... + 495175.

Almost surely, 2^253398784 is an apocalyptic number.

It is an amenable number.

253398784 is a deficient number, since it is larger than the sum of its proper divisors (252409456).

253398784 is an frugal number, since it uses more digits than its factorization.

253398784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989855 (or 989841 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 253398784 is about 15918.5044523661. The cubic root of 253398784 is about 632.8024843233.

The spelling of 253398784 in words is "two hundred fifty-three million, three hundred ninety-eight thousand, seven hundred eighty-four".