20379804 has 24 divisors (see below), whose sum is σ = 50350608. Its totient is φ = 6393600.

The previous prime is 20379781. The next prime is 20379809. The reversal of 20379804 is 40897302.

It is a super-2 number, since 2×20379804² = 830672822156832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20379809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49747 + ... + 50154.

It is an arithmetic number, because the mean of its divisors is an integer number (2097942).

Almost surely, 2^20379804 is an apocalyptic number.

It is an amenable number.

20379804 is an abundant number, since it is smaller than the sum of its proper divisors (29970804).

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

20379804 is a wasteful number, since it uses less digits than its factorization.

20379804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99925 (or 99923 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20379804 is about 4514.3996278575. The cubic root of 20379804 is about 273.1492428216.

The spelling of 20379804 in words is "twenty million, three hundred seventy-nine thousand, eight hundred four".