20799207 has 32 divisors (see below), whose sum is σ = 36207360. Its totient is φ = 11633760.

The previous prime is 20799179. The next prime is 20799209. The reversal of 20799207 is 70299702.

It is not a de Polignac number, because 20799207 - 2⁸ = 20798951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20799209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1168 + ... + 6554.

It is an arithmetic number, because the mean of its divisors is an integer number (1131480).

Almost surely, 2^20799207 is an apocalyptic number.

20799207 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20799207 is a deficient number, since it is larger than the sum of its proper divisors (15408153).

20799207 is a wasteful number, since it uses less digits than its factorization.

20799207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420 (or 5414 counting only the distinct ones).

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

The square root of 20799207 is about 4560.6147611917. The cubic root of 20799207 is about 275.0102784037.

The spelling of 20799207 in words is "twenty million, seven hundred ninety-nine thousand, two hundred seven".