7920408 has 16 divisors (see below), whose sum is σ = 19801080. Its totient is φ = 2640128.

The previous prime is 7920401. The next prime is 7920431. The reversal of 7920408 is 8040297.

7920408 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7920401) 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, 164985 + ... + 165032.

Almost surely, 2^7920408 is an apocalyptic number.

It is an amenable number.

7920408 is an abundant number, since it is smaller than the sum of its proper divisors (11880672).

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

7920408 is a wasteful number, since it uses less digits than its factorization.

7920408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330026 (or 330022 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 7920408 is about 2814.3219432041. The cubic root of 7920408 is about 199.3345214810.

The spelling of 7920408 in words is "seven million, nine hundred twenty thousand, four hundred eight".