229697538 has 32 divisors (see below), whose sum is σ = 541962240. Its totient is φ = 63510480.

The previous prime is 229697537. The next prime is 229697543. The reversal of 229697538 is 835796922.

It is a super-2 number, since 2×229697538² = 105521917926522888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (229697537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86908 + ... + 89511.

It is an arithmetic number, because the mean of its divisors is an integer number (16936320).

Almost surely, 2^229697538 is an apocalyptic number.

229697538 is an abundant number, since it is smaller than the sum of its proper divisors (312264702).

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

229697538 is a wasteful number, since it uses less digits than its factorization.

229697538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176462.

The product of its digits is 1632960, while the sum is 51.

The square root of 229697538 is about 15155.7757307239. The cubic root of 229697538 is about 612.4238754761.

The spelling of 229697538 in words is "two hundred twenty-nine million, six hundred ninety-seven thousand, five hundred thirty-eight".