7972803900 has 108 divisors (see below), whose sum is σ = 25047974952. Its totient is φ = 2121175680.

The previous prime is 7972803893. The next prime is 7972803911. The reversal of 7972803900 is 93082797.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 388702 + ... + 408698.

It is an arithmetic number, because the mean of its divisors is an integer number (231925694).

Almost surely, 2^7972803900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7972803900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12523987476).

7972803900 is an abundant number, since it is smaller than the sum of its proper divisors (17075171052).

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

7972803900 is a wasteful number, since it uses less digits than its factorization.

7972803900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460 (or 20450 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 7972803900 is about 89290.5588514262. The cubic root of 7972803900 is about 1997.7310853198.

The spelling of 7972803900 in words is "seven billion, nine hundred seventy-two million, eight hundred three thousand, nine hundred".