20072799 has 16 divisors (see below), whose sum is σ = 29811040. Its totient is φ = 13348800.

The previous prime is 20072783. The next prime is 20072809. The reversal of 20072799 is 99727002.

It is not a de Polignac number, because 20072799 - 2⁴ = 20072783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15609 + ... + 16845.

It is an arithmetic number, because the mean of its divisors is an integer number (1863190).

Almost surely, 2^20072799 is an apocalyptic number.

20072799 is a deficient number, since it is larger than the sum of its proper divisors (9738241).

20072799 is a wasteful number, since it uses less digits than its factorization.

20072799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847 (or 1841 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 20072799 is about 4480.2677375353. The cubic root of 20072799 is about 271.7707076795.

The spelling of 20072799 in words is "twenty million, seventy-two thousand, seven hundred ninety-nine".