7923240 has 96 divisors (see below), whose sum is σ = 27747720. Its totient is φ = 1949184.

The previous prime is 7923239. The next prime is 7923257. The reversal of 7923240 is 423297.

It can be written as a sum of positive squares in 4 ways, for example, as 4485924 + 3437316 = 2118^2 + 1854^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3834 + ... + 5526.

Almost surely, 2^7923240 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 7923240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13873860).

7923240 is an abundant number, since it is smaller than the sum of its proper divisors (19824480).

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

7923240 is a wasteful number, since it uses less digits than its factorization.

7923240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1716 counting only the distinct ones).

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

The square root of 7923240 is about 2814.8250389678. The cubic root of 7923240 is about 199.3582764902.

The spelling of 7923240 in words is "seven million, nine hundred twenty-three thousand, two hundred forty".