229536636 has 24 divisors (see below), whose sum is σ = 612097920. Its totient is φ = 65581872.

The previous prime is 229536631. The next prime is 229536667. The reversal of 229536636 is 636635922.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229536631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366206 + ... + 1366373.

It is an arithmetic number, because the mean of its divisors is an integer number (25504080).

Almost surely, 2^229536636 is an apocalyptic number.

It is an amenable number.

229536636 is an abundant number, since it is smaller than the sum of its proper divisors (382561284).

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

229536636 is a wasteful number, since it uses less digits than its factorization.

229536636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732593 (or 2732591 counting only the distinct ones).

The product of its digits is 349920, while the sum is 42.

The square root of 229536636 is about 15150.4665274704. The cubic root of 229536636 is about 612.2808420981.

The spelling of 229536636 in words is "two hundred twenty-nine million, five hundred thirty-six thousand, six hundred thirty-six".