7474522720 has 144 divisors (see below), whose sum is σ = 20694502080. Its totient is φ = 2543622144.

The previous prime is 7474522717. The next prime is 7474522723. The reversal of 7474522720 is 272254747.

It is an interprime number because it is at equal distance from previous prime (7474522717) and next prime (7474522723).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7474522723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1070601 + ... + 1077559.

It is an arithmetic number, because the mean of its divisors is an integer number (143711820).

Almost surely, 2^7474522720 is an apocalyptic number.

7474522720 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 7474522720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10347251040).

7474522720 is an abundant number, since it is smaller than the sum of its proper divisors (13219979360).

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

7474522720 is a wasteful number, since it uses less digits than its factorization.

7474522720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7125 (or 7110 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 40.

The square root of 7474522720 is about 86455.3221033847. The cubic root of 7474522720 is about 1955.2148576770.

The spelling of 7474522720 in words is "seven billion, four hundred seventy-four million, five hundred twenty-two thousand, seven hundred twenty".