7522428 has 24 divisors (see below), whose sum is σ = 17605840. Its totient is φ = 2499840.

The previous prime is 7522409. The next prime is 7522439. The reversal of 7522428 is 8242257.

7522428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 7522395 and 7522404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4308 + ... + 5796.

Almost surely, 2^7522428 is an apocalyptic number.

It is an amenable number.

7522428 is an abundant number, since it is smaller than the sum of its proper divisors (10083412).

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

7522428 is a wasteful number, since it uses less digits than its factorization.

7522428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1915 counting only the distinct ones).

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

The square root of 7522428 is about 2742.7045046815. The cubic root of 7522428 is about 195.9383048915.

The spelling of 7522428 in words is "seven million, five hundred twenty-two thousand, four hundred twenty-eight".