2640474320 has 40 divisors (see below), whose sum is σ = 6697205280. Its totient is φ = 960172160.

The previous prime is 2640474311. The next prime is 2640474337. The reversal of 2640474320 is 234740462.

It is a tau number, because it is divible by the number of its divisors (40).

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, 1499390 + ... + 1501149.

It is an arithmetic number, because the mean of its divisors is an integer number (167430132).

Almost surely, 2^2640474320 is an apocalyptic number.

2640474320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640474320 is an abundant number, since it is smaller than the sum of its proper divisors (4056730960).

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

2640474320 is a wasteful number, since it uses less digits than its factorization.

2640474320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000563 (or 3000557 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 2640474320 is about 51385.5458275963. The cubic root of 2640474320 is about 1382.1674125594.

The spelling of 2640474320 in words is "two billion, six hundred forty million, four hundred seventy-four thousand, three hundred twenty".