20379800 has 48 divisors (see below), whose sum is σ = 54155760. Its totient is φ = 6986880.

The previous prime is 20379781. The next prime is 20379809. The reversal of 20379800 is 897302.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5879 + ... + 8678.

It is an arithmetic number, because the mean of its divisors is an integer number (1128245).

Almost surely, 2^20379800 is an apocalyptic number.

20379800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20379800 is an abundant number, since it is smaller than the sum of its proper divisors (33775960).

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

20379800 is a wasteful number, since it uses less digits than its factorization.

20379800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14580 (or 14571 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20379800 is about 4514.3991848307. The cubic root of 20379800 is about 273.1492249510.

The spelling of 20379800 in words is "twenty million, three hundred seventy-nine thousand, eight hundred".