7920324 has 18 divisors (see below), whose sum is σ = 20020910. Its totient is φ = 2640096.

The previous prime is 7920323. The next prime is 7920329. The reversal of 7920324 is 4230297.

7920324 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5846724 + 2073600 = 2418^2 + 1440^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (7920323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109969 + ... + 110040.

Almost surely, 2^7920324 is an apocalyptic number.

It is an amenable number.

7920324 is an abundant number, since it is smaller than the sum of its proper divisors (12100586).

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

7920324 is a wasteful number, since it uses less digits than its factorization.

7920324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220019 (or 220014 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 7920324 is about 2814.3070194988. The cubic root of 7920324 is about 199.3338167968. Note that the first 3 decimals are identical.

Subtracting from 7920324 its sum of digits (27), we obtain a palindrome (7920297).

The spelling of 7920324 in words is "seven million, nine hundred twenty thousand, three hundred twenty-four".