20381852 has 12 divisors (see below), whose sum is σ = 35817936. Its totient is φ = 10148160.

The previous prime is 20381843. The next prime is 20381891. The reversal of 20381852 is 25818302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9608 + ... + 11535.

It is an arithmetic number, because the mean of its divisors is an integer number (2984828).

Almost surely, 2^20381852 is an apocalyptic number.

It is an amenable number.

20381852 is a deficient number, since it is larger than the sum of its proper divisors (15436084).

20381852 is a wasteful number, since it uses less digits than its factorization.

20381852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21388 (or 21386 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 20381852 is about 4514.6264518784. The cubic root of 20381852 is about 273.1583922539.

The spelling of 20381852 in words is "twenty million, three hundred eighty-one thousand, eight hundred fifty-two".