2640972 has 24 divisors (see below), whose sum is σ = 6375600. Its totient is φ = 849856.

The previous prime is 2640959. The next prime is 2640973. The reversal of 2640972 is 2790462.

It is a happy number.

2640972 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2640973) 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, 3447 + ... + 4142.

It is an arithmetic number, because the mean of its divisors is an integer number (265650).

2^2640972 is an apocalyptic number.

It is an amenable number.

2640972 is an abundant number, since it is smaller than the sum of its proper divisors (3734628).

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

2640972 is a wasteful number, since it uses less digits than its factorization.

2640972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625 (or 7623 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 2640972 is about 1625.1067657234. The cubic root of 2640972 is about 138.2254244669.

The spelling of 2640972 in words is "two million, six hundred forty thousand, nine hundred seventy-two".