264540538 has 8 divisors (see below), whose sum is σ = 396885888. Its totient is φ = 132245244.

The previous prime is 264540527. The next prime is 264540541. The reversal of 264540538 is 835045462.

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

It is a junction number, because it is equal to n+sod(n) for n = 264540497 and 264540506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6445 + ... + 23887.

It is an arithmetic number, because the mean of its divisors is an integer number (49610736).

Almost surely, 2^264540538 is an apocalyptic number.

264540538 is a deficient number, since it is larger than the sum of its proper divisors (132345350).

264540538 is a wasteful number, since it uses less digits than its factorization.

264540538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25028.

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 264540538 is about 16264.7022106155. The cubic root of 264540538 is about 641.9443943390.

The spelling of 264540538 in words is "two hundred sixty-four million, five hundred forty thousand, five hundred thirty-eight".