264222520 has 16 divisors (see below), whose sum is σ = 594500760. Its totient is φ = 105688992.

The previous prime is 264222499. The next prime is 264222559. The reversal of 264222520 is 25222462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3302742 + ... + 3302821.

Almost surely, 2^264222520 is an apocalyptic number.

264222520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264222520 is an abundant number, since it is smaller than the sum of its proper divisors (330278240).

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

264222520 is a wasteful number, since it uses less digits than its factorization.

264222520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6605574 (or 6605570 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 264222520 is about 16254.9229466030. The cubic root of 264222520 is about 641.6870528933.

Adding to 264222520 its reverse (25222462), we get a palindrome (289444982).

It can be divided in two parts, 264 and 222520, that added together give a square (222784 = 472²).

The spelling of 264222520 in words is "two hundred sixty-four million, two hundred twenty-two thousand, five hundred twenty".