264320238 has 64 divisors (see below), whose sum is σ = 652538880. Its totient is φ = 69507072.

The previous prime is 264320237. The next prime is 264320249. The reversal of 264320238 is 832023462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264320237) 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, 314623 + ... + 315461.

It is an arithmetic number, because the mean of its divisors is an integer number (10195920).

Almost surely, 2^264320238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264320238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326269440).

264320238 is an abundant number, since it is smaller than the sum of its proper divisors (388218642).

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

264320238 is a wasteful number, since it uses less digits than its factorization.

264320238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 264320238 is about 16257.9284658286. The cubic root of 264320238 is about 641.7661486582.

The spelling of 264320238 in words is "two hundred sixty-four million, three hundred twenty thousand, two hundred thirty-eight".