7522430 has 16 divisors (see below), whose sum is σ = 13585104. Its totient is φ = 2999040.

The previous prime is 7522409. The next prime is 7522439. The reversal of 7522430 is 342257.

It is a junction number, because it is equal to n+sod(n) for n = 7522396 and 7522405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7522439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2465 + ... + 4595.

It is an arithmetic number, because the mean of its divisors is an integer number (849069).

Almost surely, 2^7522430 is an apocalyptic number.

7522430 is a deficient number, since it is larger than the sum of its proper divisors (6062674).

7522430 is a wasteful number, since it uses less digits than its factorization.

7522430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 7522430 is about 2742.7048692851. The cubic root of 7522430 is about 195.9383222563.

Adding to 7522430 its reverse (342257), we get a palindrome (7864687).

The spelling of 7522430 in words is "seven million, five hundred twenty-two thousand, four hundred thirty".