2539624 has 8 divisors (see below), whose sum is σ = 4761810. Its totient is φ = 1269808.

The previous prime is 2539583. The next prime is 2539627. The reversal of 2539624 is 4269352.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 1170724 = 1170^2 + 1082^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2539624² = 12899380122752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2539627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158719 + ... + 158734.

2^2539624 is an apocalyptic number.

It is an amenable number.

2539624 is a deficient number, since it is larger than the sum of its proper divisors (2222186).

2539624 is a wasteful number, since it uses less digits than its factorization.

2539624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317459 (or 317455 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 2539624 is about 1593.6197789937. The cubic root of 2539624 is about 136.4341661272.

The spelling of 2539624 in words is "two million, five hundred thirty-nine thousand, six hundred twenty-four".