220309492 has 48 divisors (see below), whose sum is σ = 428440320. Its totient is φ = 98485632.

The previous prime is 220309489. The next prime is 220309493. The reversal of 220309492 is 294903022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220309493) 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, 265983 + ... + 266809.

It is an arithmetic number, because the mean of its divisors is an integer number (8925840).

Almost surely, 2^220309492 is an apocalyptic number.

It is an amenable number.

220309492 is a deficient number, since it is larger than the sum of its proper divisors (208130828).

220309492 is a wasteful number, since it uses less digits than its factorization.

220309492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000 (or 998 counting only the distinct ones).

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

The square root of 220309492 is about 14842.8262807324. The cubic root of 220309492 is about 603.9640235578.

The spelling of 220309492 in words is "two hundred twenty million, three hundred nine thousand, four hundred ninety-two".