20072899 has 24 divisors (see below), whose sum is σ = 25740288. Its totient is φ = 15477840.

The previous prime is 20072867. The next prime is 20072917. The reversal of 20072899 is 99827002.

It is not a de Polignac number, because 20072899 - 2⁵ = 20072867 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072809) 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 23 ways as a sum of consecutive naturals, for example, 89902 + ... + 90124.

It is an arithmetic number, because the mean of its divisors is an integer number (1072512).

Almost surely, 2^20072899 is an apocalyptic number.

20072899 is a deficient number, since it is larger than the sum of its proper divisors (5667389).

20072899 is a wasteful number, since it uses less digits than its factorization.

20072899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 20072899 is about 4480.2788975688. The cubic root of 20072899 is about 271.7711589872.

The spelling of 20072899 in words is "twenty million, seventy-two thousand, eight hundred ninety-nine".