264004840 has 32 divisors (see below), whose sum is σ = 648012960. Its totient is φ = 96001600.

The previous prime is 264004813. The next prime is 264004847. The reversal of 264004840 is 48400462.

It is a junction number, because it is equal to n+sod(n) for n = 264004799 and 264004808.

It is not an unprimeable number, because it can be changed into a prime (264004847) 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, 299566 + ... + 300445.

It is an arithmetic number, because the mean of its divisors is an integer number (20250405).

Almost surely, 2^264004840 is an apocalyptic number.

264004840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264004840 is an abundant number, since it is smaller than the sum of its proper divisors (384008120).

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

264004840 is a wasteful number, since it uses less digits than its factorization.

264004840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600033 (or 600029 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 264004840 is about 16248.2257492934. The cubic root of 264004840 is about 641.5107862949.

The spelling of 264004840 in words is "two hundred sixty-four million, four thousand, eight hundred forty".