20391932000 has 96 divisors (see below), whose sum is σ = 54657910944. Its totient is φ = 7415232000.

The previous prime is 20391931999. The next prime is 20391932009. The reversal of 20391932000 is 23919302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20391932009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187727 + ... + 275726.

It is an arithmetic number, because the mean of its divisors is an integer number (569353239).

Almost surely, 2^20391932000 is an apocalyptic number.

20391932000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20391932000 is an abundant number, since it is smaller than the sum of its proper divisors (34265978944).

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

20391932000 is a wasteful number, since it uses less digits than its factorization.

20391932000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463489 (or 463471 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

The spelling of 20391932000 in words is "twenty billion, three hundred ninety-one million, nine hundred thirty-two thousand".