229691772 has 36 divisors (see below), whose sum is σ = 599342016. Its totient is φ = 74093760.

The previous prime is 229691747. The next prime is 229691797. The reversal of 229691772 is 277196922.

229691772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (229691747) and next prime (229691797).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101793 + ... + 104024.

Almost surely, 2^229691772 is an apocalyptic number.

It is an amenable number.

229691772 is an abundant number, since it is smaller than the sum of its proper divisors (369650244).

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

229691772 is a wasteful number, since it uses less digits than its factorization.

229691772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205858 (or 205853 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 229691772 is about 15155.5855050209. The cubic root of 229691772 is about 612.4187509608.

The spelling of 229691772 in words is "two hundred twenty-nine million, six hundred ninety-one thousand, seven hundred seventy-two".