2009624 has 8 divisors (see below), whose sum is σ = 3768060. Its totient is φ = 1004808.

The previous prime is 2009603. The next prime is 2009639. The reversal of 2009624 is 4269002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2009624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125594 + ... + 125609.

2^2009624 is an apocalyptic number.

It is an amenable number.

2009624 is a deficient number, since it is larger than the sum of its proper divisors (1758436).

2009624 is a wasteful number, since it uses less digits than its factorization.

2009624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251209 (or 251205 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2009624 is about 1417.6120766980. The cubic root of 2009624 is about 126.1938730352.

The spelling of 2009624 in words is "two million, nine thousand, six hundred twenty-four".