20372807 has 16 divisors (see below), whose sum is σ = 26396160. Its totient is φ = 15269472.

The previous prime is 20372801. The next prime is 20372837. The reversal of 20372807 is 70827302.

It is a cyclic number.

It is not a de Polignac number, because 20372807 - 2⁶ = 20372743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20372807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4163 + ... + 7620.

It is an arithmetic number, because the mean of its divisors is an integer number (1649760).

Almost surely, 2^20372807 is an apocalyptic number.

20372807 is a deficient number, since it is larger than the sum of its proper divisors (6023353).

20372807 is a wasteful number, since it uses less digits than its factorization.

20372807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11822.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 20372807 is about 4513.6245967072. The cubic root of 20372807 is about 273.1179791251.

The spelling of 20372807 in words is "twenty million, three hundred seventy-two thousand, eight hundred seven".