220764460 has 24 divisors (see below), whose sum is σ = 529835040. Its totient is φ = 75690624.

The previous prime is 220764409. The next prime is 220764463. The reversal of 220764460 is 64467022.

It is not an unprimeable number, because it can be changed into a prime (220764463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788305 + ... + 788584.

It is an arithmetic number, because the mean of its divisors is an integer number (22076460).

Almost surely, 2^220764460 is an apocalyptic number.

220764460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220764460 is an abundant number, since it is smaller than the sum of its proper divisors (309070580).

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

220764460 is a wasteful number, since it uses less digits than its factorization.

220764460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576905 (or 1576903 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 220764460 is about 14858.1445678793. The cubic root of 220764460 is about 604.3794926673.

The spelling of 220764460 in words is "two hundred twenty million, seven hundred sixty-four thousand, four hundred sixty".