2644572 has 48 divisors (see below), whose sum is σ = 7427840. Its totient is φ = 715392.

The previous prime is 2644561. The next prime is 2644573. The reversal of 2644572 is 2754462.

It is a super-2 number, since 2×2644572² = 13987522126368, which contains 22 as substring.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 768 + ... + 2424.

2^2644572 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 2644572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3713920).

2644572 is an abundant number, since it is smaller than the sum of its proper divisors (4783268).

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

2644572 is a wasteful number, since it uses less digits than its factorization.

2644572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690 (or 1688 counting only the distinct ones).

The product of its digits is 13440, while the sum is 30.

The square root of 2644572 is about 1626.2140080568. The cubic root of 2644572 is about 138.2882025647.

The spelling of 2644572 in words is "two million, six hundred forty-four thousand, five hundred seventy-two".