7321620000 has 120 divisors (see below), whose sum is σ = 24016574736. Its totient is φ = 1952416000.

The previous prime is 7321619989. The next prime is 7321620013. The reversal of 7321620000 is 261237.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×7321620000² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1014 + ... + 121013.

Almost surely, 2^7321620000 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 7321620000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12008287368).

7321620000 is an abundant number, since it is smaller than the sum of its proper divisors (16694954736).

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

7321620000 is a wasteful number, since it uses less digits than its factorization.

7321620000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122060 (or 122037 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 7321620000 is about 85566.4653938679. The cubic root of 7321620000 is about 1941.7906024235.

Adding to 7321620000 its reverse (261237), we get a palindrome (7321881237).

The spelling of 7321620000 in words is "seven billion, three hundred twenty-one million, six hundred twenty thousand".