20902802 has 8 divisors (see below), whose sum is σ = 31378800. Its totient is φ = 10443204.

The previous prime is 20902801. The next prime is 20902811. The reversal of 20902802 is 20820902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20902801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152 + ... + 6467.

It is an arithmetic number, because the mean of its divisors is an integer number (3922350).

Almost surely, 2^20902802 is an apocalyptic number.

20902802 is a deficient number, since it is larger than the sum of its proper divisors (10475998).

20902802 is a wasteful number, since it uses less digits than its factorization.

20902802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8200.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 20902802 is about 4571.9582237811. The cubic root of 20902802 is about 275.4661054060.

The spelling of 20902802 in words is "twenty million, nine hundred two thousand, eight hundred two".