20392886 has 4 divisors (see below), whose sum is σ = 30589332. Its totient is φ = 10196442.

The previous prime is 20392873. The next prime is 20392891. The reversal of 20392886 is 68829302.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5098220 + ... + 5098223.

It is an arithmetic number, because the mean of its divisors is an integer number (7647333).

Almost surely, 2^20392886 is an apocalyptic number.

20392886 is a deficient number, since it is larger than the sum of its proper divisors (10196446).

20392886 is a wasteful number, since it uses less digits than its factorization.

20392886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196445.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20392886 is about 4515.8483145473. The cubic root of 20392886 is about 273.2076760639.

The spelling of 20392886 in words is "twenty million, three hundred ninety-two thousand, eight hundred eighty-six".