220432990 has 32 divisors (see below), whose sum is σ = 407975616. Its totient is φ = 85720320.

The previous prime is 220432963. The next prime is 220432991. The reversal of 220432990 is 99234022.

220432990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220432991) 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, 49704 + ... + 53956.

It is an arithmetic number, because the mean of its divisors is an integer number (12749238).

Almost surely, 2^220432990 is an apocalyptic number.

220432990 is a deficient number, since it is larger than the sum of its proper divisors (187542626).

220432990 is a wasteful number, since it uses less digits than its factorization.

220432990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 220432990 is about 14846.9858893986. The cubic root of 220432990 is about 604.0768563662.

The spelling of 220432990 in words is "two hundred twenty million, four hundred thirty-two thousand, nine hundred ninety".