20392706880 has 896 divisors, whose sum is σ = 91065461760. Its totient is φ = 4180377600.

The previous prime is 20392706869. The next prime is 20392706941. The reversal of 20392706880 is 8860729302.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 29090530 + ... + 29091230.

It is an arithmetic number, because the mean of its divisors is an integer number (101635560).

Almost surely, 2^20392706880 is an apocalyptic number.

20392706880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20392706880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45532730880).

20392706880 is an abundant number, since it is smaller than the sum of its proper divisors (70672754880).

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

20392706880 is a wasteful number, since it uses less digits than its factorization.

20392706880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 20392706880 in words is "twenty billion, three hundred ninety-two million, seven hundred six thousand, eight hundred eighty".