2544864 has 72 divisors (see below), whose sum is σ = 7785288. Its totient is φ = 725760.

The previous prime is 2544851. The next prime is 2544887. The reversal of 2544864 is 4684452.

It is a super-3 number, since 3×2544864³ = 49444158420043333632, which contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4434 + ... + 4974.

It is an arithmetic number, because the mean of its divisors is an integer number (108129).

2^2544864 is an apocalyptic number.

2544864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2544864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3892644).

2544864 is an abundant number, since it is smaller than the sum of its proper divisors (5240424).

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

2544864 is a wasteful number, since it uses less digits than its factorization.

2544864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 553 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 2544864 is about 1595.2629877233. The cubic root of 2544864 is about 136.5279364254.

The spelling of 2544864 in words is "two million, five hundred forty-four thousand, eight hundred sixty-four".