7522398 has 96 divisors (see below), whose sum is σ = 19498752. Its totient is φ = 2073600.

The previous prime is 7522391. The next prime is 7522409. The reversal of 7522398 is 8932257.

It is a happy number.

7522398 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7522391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123288 + ... + 123348.

It is an arithmetic number, because the mean of its divisors is an integer number (203112).

Almost surely, 2^7522398 is an apocalyptic number.

7522398 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7522398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9749376).

7522398 is an abundant number, since it is smaller than the sum of its proper divisors (11976354).

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

7522398 is a wasteful number, since it uses less digits than its factorization.

7522398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 127 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 7522398 is about 2742.6990356217. The cubic root of 7522398 is about 195.9380444190.

The spelling of 7522398 in words is "seven million, five hundred twenty-two thousand, three hundred ninety-eight".