2544402 has 32 divisors (see below), whose sum is σ = 6019200. Its totient is φ = 701568.

The previous prime is 2544391. The next prime is 2544403. The reversal of 2544402 is 2044452.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2544403) 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, 174 + ... + 2262.

It is an arithmetic number, because the mean of its divisors is an integer number (188100).

2^2544402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2544402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3009600).

2544402 is an abundant number, since it is smaller than the sum of its proper divisors (3474798).

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

2544402 is a wasteful number, since it uses less digits than its factorization.

2544402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 2544402 is about 1595.1181774402. The cubic root of 2544402 is about 136.5196740685.

Adding to 2544402 its reverse (2044452), we get a palindrome (4588854).

It can be divided in two parts, 254 and 4402, that added together give a triangular number (4656 = T₉₆).

The spelling of 2544402 in words is "two million, five hundred forty-four thousand, four hundred two".