7428522 has 8 divisors (see below), whose sum is σ = 14857056. Its totient is φ = 2476172.

The previous prime is 7428521. The next prime is 7428529. The reversal of 7428522 is 2258247.

It is a sphenic number, since it is the product of 3 distinct primes.

7428522 is an admirable number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7428522.

It is not an unprimeable number, because it can be changed into a prime (7428521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619038 + ... + 619049.

It is an arithmetic number, because the mean of its divisors is an integer number (1857132).

Almost surely, 2^7428522 is an apocalyptic number.

7428522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7428522 is a wasteful number, since it uses less digits than its factorization.

7428522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238092.

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

The square root of 7428522 is about 2725.5315077981. The cubic root of 7428522 is about 195.1195585024.

The spelling of 7428522 in words is "seven million, four hundred twenty-eight thousand, five hundred twenty-two".