20498032800 has 864 divisors, whose sum is σ = 87525023040. Its totient is φ = 4615833600.

The previous prime is 20498032799. The next prime is 20498032853. The reversal of 20498032800 is 823089402.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 113248710 + ... + 113248890.

It is an arithmetic number, because the mean of its divisors is an integer number (101302110).

Almost surely, 2^20498032800 is an apocalyptic number.

20498032800 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 20498032800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43762511520).

20498032800 is an abundant number, since it is smaller than the sum of its proper divisors (67026990240).

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

20498032800 is a wasteful number, since it uses less digits than its factorization.

20498032800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 20498032800 in words is "twenty billion, four hundred ninety-eight million, thirty-two thousand, eight hundred".