7904480 has 48 divisors (see below), whose sum is σ = 18869760. Its totient is φ = 3128832.

The previous prime is 7904471. The next prime is 7904483. The reversal of 7904480 is 844097.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7904483) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20126 + ... + 20514.

It is an arithmetic number, because the mean of its divisors is an integer number (393120).

Almost surely, 2^7904480 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 7904480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9434880).

7904480 is an abundant number, since it is smaller than the sum of its proper divisors (10965280).

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

7904480 is a wasteful number, since it uses less digits than its factorization.

7904480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 7904480 is about 2811.4907077919. The cubic root of 7904480 is about 199.2008107363.

The spelling of 7904480 in words is "seven million, nine hundred four thousand, four hundred eighty".