20613004800 has 240 divisors, whose sum is σ = 71057416320. Its totient is φ = 5257584640.

The previous prime is 20613004787. The next prime is 20613004831. The reversal of 20613004800 is 840031602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

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, 871531 + ... + 894869.

It is an arithmetic number, because the mean of its divisors is an integer number (296072568).

Almost surely, 2^20613004800 is an apocalyptic number.

20613004800 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 20613004800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35528708160).

20613004800 is an abundant number, since it is smaller than the sum of its proper divisors (50444411520).

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

20613004800 is a wasteful number, since it uses less digits than its factorization.

20613004800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23393 (or 23372 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The spelling of 20613004800 in words is "twenty billion, six hundred thirteen million, four thousand, eight hundred".