2472640 has 28 divisors (see below), whose sum is σ = 5888736. Its totient is φ = 988928.

The previous prime is 2472637. The next prime is 2472649. The reversal of 2472640 is 462742.

It is a super-2 number, since 2×2472640² = 12227897139200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2472649) 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, 3544 + ... + 4183.

It is an arithmetic number, because the mean of its divisors is an integer number (210312).

2^2472640 is an apocalyptic number.

2472640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2472640 is an abundant number, since it is smaller than the sum of its proper divisors (3416096).

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

2472640 is an equidigital number, since it uses as much as digits as its factorization.

2472640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7744 (or 7734 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 2472640 is about 1572.4630361315. The cubic root of 2472640 is about 135.2239538338.

The spelling of 2472640 in words is "two million, four hundred seventy-two thousand, six hundred forty".