20826806392 has 16 divisors (see below), whose sum is σ = 44628870960. Its totient is φ = 8925774144.

The previous prime is 20826806389. The next prime is 20826806417. The reversal of 20826806392 is 29360862802.

It is a happy number.

It is a super-3 number, since 3×20826806392³ (a number of 32 digits) contains 333 as substring.

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, 185953573 + ... + 185953684.

It is an arithmetic number, because the mean of its divisors is an integer number (2789304435).

Almost surely, 2^20826806392 is an apocalyptic number.

It is an amenable number.

20826806392 is an abundant number, since it is smaller than the sum of its proper divisors (23802064568).

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

20826806392 is a wasteful number, since it uses less digits than its factorization.

20826806392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371907270 (or 371907266 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 20826806392 in words is "twenty billion, eight hundred twenty-six million, eight hundred six thousand, three hundred ninety-two".