7422528 has 56 divisors (see below), whose sum is σ = 19966432. Its totient is φ = 2433024.

The previous prime is 7422497. The next prime is 7422539. The reversal of 7422528 is 8252247.

It is a d-powerful number, because it can be written as 7⁵ + 4⁸ + 2⁷ + 2²⁰ + 5² + 2²² + 8⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 7422495 and 7422504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12576 + ... + 13152.

Almost surely, 2^7422528 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 7422528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9983216).

7422528 is an abundant number, since it is smaller than the sum of its proper divisors (12543904).

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

7422528 is a wasteful number, since it uses less digits than its factorization.

7422528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 649 counting only the distinct ones).

The product of its digits is 8960, while the sum is 30.

The square root of 7422528 is about 2724.4316838563. The cubic root of 7422528 is about 195.0670643751.

The spelling of 7422528 in words is "seven million, four hundred twenty-two thousand, five hundred twenty-eight".