264477220 has 48 divisors (see below), whose sum is σ = 640942848. Its totient is φ = 89792640.

The previous prime is 264477217. The next prime is 264477251. The reversal of 264477220 is 22774462.

264477220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 5250 + ... + 23590.

It is an arithmetic number, because the mean of its divisors is an integer number (13352976).

Almost surely, 2^264477220 is an apocalyptic number.

264477220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264477220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320471424).

264477220 is an abundant number, since it is smaller than the sum of its proper divisors (376465628).

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

264477220 is a wasteful number, since it uses less digits than its factorization.

264477220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18460 (or 18458 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 264477220 is about 16262.7556090596. The cubic root of 264477220 is about 641.8931736088.

The spelling of 264477220 in words is "two hundred sixty-four million, four hundred seventy-seven thousand, two hundred twenty".