7125720 has 128 divisors (see below), whose sum is σ = 25920000. Its totient is φ = 1529856.

The previous prime is 7125707. The next prime is 7125731. The reversal of 7125720 is 275217.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14031 + ... + 14529.

It is an arithmetic number, because the mean of its divisors is an integer number (202500).

Almost surely, 2^7125720 is an apocalyptic number.

7125720 is a gapful number since it is divisible by the number (70) 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 7125720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12960000).

7125720 is an abundant number, since it is smaller than the sum of its proper divisors (18794280).

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

7125720 is a wasteful number, since it uses less digits than its factorization.

7125720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 7125720 is about 2669.4044279577. The cubic root of 7125720 is about 192.4315380316.

The spelling of 7125720 in words is "seven million, one hundred twenty-five thousand, seven hundred twenty".