253438736 has 10 divisors (see below), whose sum is σ = 491037582. Its totient is φ = 126719360.

The previous prime is 253438723. The next prime is 253438741. The reversal of 253438736 is 637834352.

It can be written as a sum of positive squares in only one way, i.e., 223801600 + 29637136 = 14960^2 + 5444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 253438693 and 253438702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7919945 + ... + 7919976.

Almost surely, 2^253438736 is an apocalyptic number.

It is an amenable number.

253438736 is a deficient number, since it is larger than the sum of its proper divisors (237598846).

253438736 is a wasteful number, since it uses less digits than its factorization.

253438736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15839929 (or 15839923 counting only the distinct ones).

The product of its digits is 362880, while the sum is 41.

The square root of 253438736 is about 15919.7592946627. The cubic root of 253438736 is about 632.8357394109.

The spelling of 253438736 in words is "two hundred fifty-three million, four hundred thirty-eight thousand, seven hundred thirty-six".