7321200000 has 192 divisors, whose sum is σ = 24311100240. Its totient is φ = 1952000000.

The previous prime is 7321199983. The next prime is 7321200043. The reversal of 7321200000 is 21237.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 1196950 + ... + 1203050.

Almost surely, 2^7321200000 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 7321200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12155550120).

7321200000 is an abundant number, since it is smaller than the sum of its proper divisors (16989900240).

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

7321200000 is an frugal number, since it uses more digits than its factorization.

7321200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143 (or 6111 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 7321200000 is about 85564.0111261738. The cubic root of 7321200000 is about 1941.7534718591.

Adding to 7321200000 its reverse (21237), we get a palindrome (7321221237).

The spelling of 7321200000 in words is "seven billion, three hundred twenty-one million, two hundred thousand".