20447232000 has 368 divisors, whose sum is σ = 73282870752. Its totient is φ = 5033164800.

The previous prime is 20447231977. The next prime is 20447232011. The reversal of 20447232000 is 23274402.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1572863994 + ... + 1572864006.

Almost surely, 2^20447232000 is an apocalyptic number.

20447232000 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 20447232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36641435376).

20447232000 is an abundant number, since it is smaller than the sum of its proper divisors (52835638752).

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

20447232000 is an frugal number, since it uses more digits than its factorization.

20447232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The spelling of 20447232000 in words is "twenty billion, four hundred forty-seven million, two hundred thirty-two thousand".