229772990 has 32 divisors (see below), whose sum is σ = 432967680. Its totient is φ = 87629344.

The previous prime is 229772941. The next prime is 229772999. The reversal of 229772990 is 99277922.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229772999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78371 + ... + 81249.

It is an arithmetic number, because the mean of its divisors is an integer number (13530240).

Almost surely, 2^229772990 is an apocalyptic number.

229772990 is a deficient number, since it is larger than the sum of its proper divisors (203194690).

229772990 is a wasteful number, since it uses less digits than its factorization.

229772990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 229772990 is about 15158.2647423773. The cubic root of 229772990 is about 612.4909253133.

The spelling of 229772990 in words is "two hundred twenty-nine million, seven hundred seventy-two thousand, nine hundred ninety".