7420904 has 32 divisors (see below), whose sum is σ = 14999040. Its totient is φ = 3432000.

The previous prime is 7420883. The next prime is 7420913. The reversal of 7420904 is 4090247.

7420904 = T₁₈₇ + T₁₈₈ + ... + T₃₇₀.

It is an unprimeable number.

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, 5054 + ... + 6354.

It is an arithmetic number, because the mean of its divisors is an integer number (468720).

Almost surely, 2^7420904 is an apocalyptic number.

It is an amenable number.

7420904 is an abundant number, since it is smaller than the sum of its proper divisors (7578136).

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

7420904 is a wasteful number, since it uses less digits than its factorization.

7420904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 1357 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 7420904 is about 2724.1336237417. The cubic root of 7420904 is about 195.0528368765.

Subtracting from 7420904 its sum of digits (26), we obtain a triangular number (7420878 = T₃₈₅₂).

The spelling of 7420904 in words is "seven million, four hundred twenty thousand, nine hundred four".