20887024 has 20 divisors (see below), whose sum is σ = 40716144. Its totient is φ = 10379648.

The previous prime is 20887021. The next prime is 20887037. The reversal of 20887024 is 42078802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20887021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1237 + ... + 6580.

Almost surely, 2^20887024 is an apocalyptic number.

It is an amenable number.

20887024 is a deficient number, since it is larger than the sum of its proper divisors (19829120).

20887024 is a wasteful number, since it uses less digits than its factorization.

20887024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7992 (or 7986 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 20887024 is about 4570.2323792122. The cubic root of 20887024 is about 275.3967782054.

The spelling of 20887024 in words is "twenty million, eight hundred eighty-seven thousand, twenty-four".