20307582900 has 864 divisors, whose sum is σ = 78823704960. Its totient is φ = 4478976000.

The previous prime is 20307582887. The next prime is 20307582929. The reversal of 20307582900 is 928570302.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 186308046 + ... + 186308154.

It is an arithmetic number, because the mean of its divisors is an integer number (91231140).

Almost surely, 2^20307582900 is an apocalyptic number.

20307582900 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 20307582900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39411852480).

20307582900 is an abundant number, since it is smaller than the sum of its proper divisors (58516122060).

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

20307582900 is a wasteful number, since it uses less digits than its factorization.

20307582900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 20307582900 in words is "twenty billion, three hundred seven million, five hundred eighty-two thousand, nine hundred".