464720220 has 48 divisors (see below), whose sum is σ = 1445797920. Its totient is φ = 123925248.

The previous prime is 464720219. The next prime is 464720257. The reversal of 464720220 is 22027464.

464720220 = 3389² + 3390² + ... + 3428².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429757 + ... + 430836.

It is an arithmetic number, because the mean of its divisors is an integer number (30120790).

Almost surely, 2^464720220 is an apocalyptic number.

It is an amenable number.

464720220 is an abundant number, since it is smaller than the sum of its proper divisors (981077700).

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

464720220 is a wasteful number, since it uses less digits than its factorization.

464720220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860611 (or 860603 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 464720220 is about 21557.3704333344. The cubic root of 464720220 is about 774.5756789255.

Adding to 464720220 its reverse (22027464), we get a palindrome (486747684).

The spelling of 464720220 in words is "four hundred sixty-four million, seven hundred twenty thousand, two hundred twenty".