264190220 has 48 divisors (see below), whose sum is σ = 642109440. Its totient is φ = 89429184.

The previous prime is 264190177. The next prime is 264190229. The reversal of 264190220 is 22091462.

It is a self number, because there is not a number n which added to its sum of digits gives 264190220.

It is not an unprimeable number, because it can be changed into a prime (264190229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884 + ... + 23003.

It is an arithmetic number, because the mean of its divisors is an integer number (13377280).

Almost surely, 2^264190220 is an apocalyptic number.

264190220 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 264190220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321054720).

264190220 is an abundant number, since it is smaller than the sum of its proper divisors (377919220).

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

264190220 is a wasteful number, since it uses less digits than its factorization.

264190220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23982 (or 23980 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 264190220 is about 16253.9293710782. The cubic root of 264190220 is about 641.6609040542.

The spelling of 264190220 in words is "two hundred sixty-four million, one hundred ninety thousand, two hundred twenty".