2644542 has 16 divisors (see below), whose sum is σ = 5876880. Its totient is φ = 881496.

The previous prime is 2644531. The next prime is 2644547. The reversal of 2644542 is 2454462.

2644542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24433 + ... + 24540.

It is an arithmetic number, because the mean of its divisors is an integer number (367305).

2^2644542 is an apocalyptic number.

2644542 is an abundant number, since it is smaller than the sum of its proper divisors (3232338).

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

2644542 is a wasteful number, since it uses less digits than its factorization.

2644542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48984 (or 48978 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 2644542 is about 1626.2047841524. The cubic root of 2644542 is about 138.2876796493.

The spelling of 2644542 in words is "two million, six hundred forty-four thousand, five hundred forty-two".