20381802 has 32 divisors (see below), whose sum is σ = 47288832. Its totient is φ = 5735664.

The previous prime is 20381791. The next prime is 20381807. The reversal of 20381802 is 20818302.

It is not an unprimeable number, because it can be changed into a prime (20381807) 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, 808 + ... + 6435.

It is an arithmetic number, because the mean of its divisors is an integer number (1477776).

Almost surely, 2^20381802 is an apocalyptic number.

20381802 is an abundant number, since it is smaller than the sum of its proper divisors (26907030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20381802 is a wasteful number, since it uses less digits than its factorization.

20381802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 20381802 is about 4514.6209143183. The cubic root of 20381802 is about 273.1581688864.

The spelling of 20381802 in words is "twenty million, three hundred eighty-one thousand, eight hundred two".