264857478 has 8 divisors (see below), whose sum is σ = 529714968. Its totient is φ = 88285824.

The previous prime is 264857449. The next prime is 264857479. The reversal of 264857478 is 874758462.

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

264857478 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 264857478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264857479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22071451 + ... + 22071462.

It is an arithmetic number, because the mean of its divisors is an integer number (66214371).

Almost surely, 2^264857478 is an apocalyptic number.

264857478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

264857478 is a wasteful number, since it uses less digits than its factorization.

264857478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44142918.

The product of its digits is 3010560, while the sum is 51.

The square root of 264857478 is about 16274.4424789300. The cubic root of 264857478 is about 642.2006583495.

The spelling of 264857478 in words is "two hundred sixty-four million, eight hundred fifty-seven thousand, four hundred seventy-eight".