264888390 has 64 divisors (see below), whose sum is σ = 724925376. Its totient is φ = 61366272.

The previous prime is 264888313. The next prime is 264888391. The reversal of 264888390 is 93888462.

It is a happy number.

264888390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264888391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13347 + ... + 26606.

It is an arithmetic number, because the mean of its divisors is an integer number (11326959).

Almost surely, 2^264888390 is an apocalyptic number.

264888390 is an abundant number, since it is smaller than the sum of its proper divisors (460036986).

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

264888390 is a wasteful number, since it uses less digits than its factorization.

264888390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39993.

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 264888390 is about 16275.3921611739. The cubic root of 264888390 is about 642.2256415148.

The spelling of 264888390 in words is "two hundred sixty-four million, eight hundred eighty-eight thousand, three hundred ninety".