253402938 has 32 divisors (see below), whose sum is σ = 564261120. Its totient is φ = 84296160.

The previous prime is 253402931. The next prime is 253402939. The reversal of 253402938 is 839204352.

253402938 is a `hidden beast` number, since 25 + 340 + 293 + 8 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253402931) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23631 + ... + 32637.

It is an arithmetic number, because the mean of its divisors is an integer number (17633160).

Almost surely, 2^253402938 is an apocalyptic number.

253402938 is an abundant number, since it is smaller than the sum of its proper divisors (310858182).

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

253402938 is a wasteful number, since it uses less digits than its factorization.

253402938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9539 (or 9533 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 253402938 is about 15918.6349289127. The cubic root of 253402938 is about 632.8059421762.

The spelling of 253402938 in words is "two hundred fifty-three million, four hundred two thousand, nine hundred thirty-eight".