264721332 has 24 divisors (see below), whose sum is σ = 617954400. Its totient is φ = 88201696.

The previous prime is 264721277. The next prime is 264721339. The reversal of 264721332 is 233127462.

It is a self number, because there is not a number n which added to its sum of digits gives 264721332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264721339) 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 7 ways as a sum of consecutive naturals, for example, 40894 + ... + 46922.

It is an arithmetic number, because the mean of its divisors is an integer number (25748100).

Almost surely, 2^264721332 is an apocalyptic number.

It is an amenable number.

264721332 is an abundant number, since it is smaller than the sum of its proper divisors (353233068).

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

264721332 is a wasteful number, since it uses less digits than its factorization.

264721332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9695 (or 9693 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

The square root of 264721332 is about 16270.2591251645. The cubic root of 264721332 is about 642.0906016290.

Adding to 264721332 its reverse (233127462), we get a palindrome (497848794).

The spelling of 264721332 in words is "two hundred sixty-four million, seven hundred twenty-one thousand, three hundred thirty-two".