2800664540 has 24 divisors (see below), whose sum is σ = 5882447760. Its totient is φ = 1120065408.

The previous prime is 2800664539. The next prime is 2800664551. The reversal of 2800664540 is 454660082.

It is a super-2 number, since 2×2800664540² = 15687443731226823200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2800664540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160064 + ... + 176696.

It is an arithmetic number, because the mean of its divisors is an integer number (245101990).

Almost surely, 2^2800664540 is an apocalyptic number.

2800664540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2800664540 is an abundant number, since it is smaller than the sum of its proper divisors (3081783220).

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

2800664540 is a wasteful number, since it uses less digits than its factorization.

2800664540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25061 (or 25059 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 2800664540 is about 52921.3051615321. The cubic root of 2800664540 is about 1409.5712426380.

The spelling of 2800664540 in words is "two billion, eight hundred million, six hundred sixty-four thousand, five hundred forty".