20392107 has 4 divisors (see below), whose sum is σ = 27189480. Its totient is φ = 13594736.

The previous prime is 20392103. The next prime is 20392139. The reversal of 20392107 is 70129302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20392107 - 2² = 20392103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20392103) 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 3 ways as a sum of consecutive naturals, for example, 3398682 + ... + 3398687.

It is an arithmetic number, because the mean of its divisors is an integer number (6797370).

Almost surely, 2^20392107 is an apocalyptic number.

20392107 is a deficient number, since it is larger than the sum of its proper divisors (6797373).

20392107 is an equidigital number, since it uses as much as digits as its factorization.

20392107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6797372.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20392107 is about 4515.7620619337. The cubic root of 20392107 is about 273.2041972121.

The spelling of 20392107 in words is "twenty million, three hundred ninety-two thousand, one hundred seven".