2645972 has 24 divisors (see below), whose sum is σ = 5394816. Its totient is φ = 1111968.

The previous prime is 2645971. The next prime is 2645977. The reversal of 2645972 is 2795462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645971) 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, 593 + ... + 2375.

It is an arithmetic number, because the mean of its divisors is an integer number (224784).

2^2645972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2645972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2697408).

2645972 is an abundant number, since it is smaller than the sum of its proper divisors (2748844).

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

2645972 is a wasteful number, since it uses less digits than its factorization.

2645972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847 (or 1845 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 2645972 is about 1626.6443987547. The cubic root of 2645972 is about 138.3126008832.

The spelling of 2645972 in words is "two million, six hundred forty-five thousand, nine hundred seventy-two".