20942924800 has 264 divisors, whose sum is σ = 62461994240. Its totient is φ = 6801408000.

The previous prime is 20942924771. The next prime is 20942924831. The reversal of 20942924800 is 842924902.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3401725 + ... + 3407875.

Almost surely, 2^20942924800 is an apocalyptic number.

20942924800 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 20942924800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31230997120).

20942924800 is an abundant number, since it is smaller than the sum of its proper divisors (41519069440).

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

20942924800 is a wasteful number, since it uses less digits than its factorization.

20942924800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6207 (or 6184 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 20942924800 in words is "twenty billion, nine hundred forty-two million, nine hundred twenty-four thousand, eight hundred".