253406430 has 24 divisors (see below), whose sum is σ = 658856952. Its totient is φ = 67575024.

The previous prime is 253406429. The next prime is 253406441. The reversal of 253406430 is 34604352.

253406430 is a `hidden beast` number, since 253 + 406 + 4 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 253406394 and 253406403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1407724 + ... + 1407903.

It is an arithmetic number, because the mean of its divisors is an integer number (27452373).

Almost surely, 2^253406430 is an apocalyptic number.

253406430 is an abundant number, since it is smaller than the sum of its proper divisors (405450522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253406430 is a wasteful number, since it uses less digits than its factorization.

253406430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815640 (or 2815637 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 253406430 is about 15918.7446113065. The cubic root of 253406430 is about 632.8088489410.

The spelling of 253406430 in words is "two hundred fifty-three million, four hundred six thousand, four hundred thirty".