264128523 has 8 divisors (see below), whose sum is σ = 352507536. Its totient is φ = 175917600.

The previous prime is 264128509. The next prime is 264128563. The reversal of 264128523 is 325821462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 264128523 - 2²⁶ = 197019659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (264128503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38308 + ... + 44673.

It is an arithmetic number, because the mean of its divisors is an integer number (44063442).

Almost surely, 2^264128523 is an apocalyptic number.

264128523 is a deficient number, since it is larger than the sum of its proper divisors (88379013).

264128523 is a wasteful number, since it uses less digits than its factorization.

264128523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84045.

The product of its digits is 23040, while the sum is 33.

The square root of 264128523 is about 16252.0313499575. The cubic root of 264128523 is about 641.6109506092.

Adding to 264128523 its reverse (325821462), we get a palindrome (589949985).

The spelling of 264128523 in words is "two hundred sixty-four million, one hundred twenty-eight thousand, five hundred twenty-three".