20926239090 has 32 divisors (see below), whose sum is σ = 50226777216. Its totient is φ = 5579907840.

The previous prime is 20926239077. The next prime is 20926239119. The reversal of 20926239090 is 9093262902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772170 + ... + 798810.

It is an arithmetic number, because the mean of its divisors is an integer number (1569586788).

Almost surely, 2^20926239090 is an apocalyptic number.

20926239090 is an abundant number, since it is smaller than the sum of its proper divisors (29300538126).

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

20926239090 is a wasteful number, since it uses less digits than its factorization.

20926239090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52834.

The product of its (nonzero) digits is 104976, while the sum is 42.

The spelling of 20926239090 in words is "twenty billion, nine hundred twenty-six million, two hundred thirty-nine thousand, ninety".