7172997120 has 600 divisors, whose sum is σ = 27404745984. Its totient is φ = 1790705664.

The previous prime is 7172997061. The next prime is 7172997121. The reversal of 7172997120 is 217992717.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7172997121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 152616937 + ... + 152616983.

Almost surely, 2^7172997120 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 7172997120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13702372992).

7172997120 is an abundant number, since it is smaller than the sum of its proper divisors (20231748864).

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

7172997120 is an equidigital number, since it uses as much as digits as its factorization.

7172997120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 45.

The square root of 7172997120 is about 84693.5482784846. The cubic root of 7172997120 is about 1928.5617641844.

The spelling of 7172997120 in words is "seven billion, one hundred seventy-two million, nine hundred ninety-seven thousand, one hundred twenty".