252435636 has 24 divisors (see below), whose sum is σ = 654463040. Its totient is φ = 84145176.

The previous prime is 252435611. The next prime is 252435641. The reversal of 252435636 is 636534252.

252435636 is a `hidden beast` number, since 2 + 52 + 43 + 563 + 6 = 666.

It is a super-4 number, since 4×252435636⁴ (a number of 35 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 252435636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168576 + ... + 1168791.

Almost surely, 2^252435636 is an apocalyptic number.

It is an amenable number.

252435636 is an abundant number, since it is smaller than the sum of its proper divisors (402027404).

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

252435636 is a wasteful number, since it uses less digits than its factorization.

252435636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337380 (or 2337372 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 252435636 is about 15888.2231857436. The cubic root of 252435636 is about 631.9997229342. Note that the first 3 decimals are identical.

Adding to 252435636 its reverse (636534252), we get a palindrome (888969888).

The spelling of 252435636 in words is "two hundred fifty-two million, four hundred thirty-five thousand, six hundred thirty-six".