20304090072036 has 27 divisors (see below), whose sum is σ = 51324296023273. Its totient is φ = 6768021012000.

The previous prime is 20304090072029. The next prime is 20304090072037. The reversal of 20304090072036 is 63027009040302.

It is a happy number.

The square root of 20304090072036 is 4506006.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4265026257636 + 16039063814400 = 2065194^2 + 4004880^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20304090072037) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26660536 + ... + 27411536.

Almost surely, 2^{20304090072036} is an apocalyptic number.

20304090072036 is the 4506006-th square number.

It is an amenable number.

20304090072036 is an abundant number, since it is smaller than the sum of its proper divisors (31020205951237).

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

20304090072036 is an frugal number, since it uses more digits than its factorization.

20304090072036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502012 (or 751006 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

Multiplying 20304090072036 by its sum of digits (36), we get a square (730947242593296 = 27036036²).

20304090072036 divided by its sum of digits (36) gives a square (564002502001 = 751001²).

The spelling of 20304090072036 in words is "twenty trillion, three hundred four billion, ninety million, seventy-two thousand, thirty-six".