2400644040 has 32 divisors (see below), whose sum is σ = 7201932480. Its totient is φ = 640171712.

The previous prime is 2400644009. The next prime is 2400644083. The reversal of 2400644040 is 404460042.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2400644040.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10002564 + ... + 10002803.

It is an arithmetic number, because the mean of its divisors is an integer number (225060390).

Almost surely, 2^2400644040 is an apocalyptic number.

2400644040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2400644040 is an abundant number, since it is smaller than the sum of its proper divisors (4801288440).

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

2400644040 is a wasteful number, since it uses less digits than its factorization.

2400644040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20005381 (or 20005377 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2400644040 is about 48996.3676204675. The cubic root of 2400644040 is about 1338.9856510080.

The spelling of 2400644040 in words is "two billion, four hundred million, six hundred forty-four thousand, forty".