264720830390 has 16 divisors (see below), whose sum is σ = 483609398832. Its totient is φ = 104307909024.

The previous prime is 264720830389. The next prime is 264720830489. The reversal of 264720830390 is 93038027462.

It is a super-2 number, since 2×264720830390² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197552189 + ... + 197553528.

It is an arithmetic number, because the mean of its divisors is an integer number (30225587427).

Almost surely, 2^264720830390 is an apocalyptic number.

264720830390 is a deficient number, since it is larger than the sum of its proper divisors (218888568442).

264720830390 is a wasteful number, since it uses less digits than its factorization.

264720830390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395105791.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 264720830390 in words is "two hundred sixty-four billion, seven hundred twenty million, eight hundred thirty thousand, three hundred ninety".