7445890 has 16 divisors (see below), whose sum is σ = 13835520. Its totient is φ = 2882160.

The previous prime is 7445873. The next prime is 7445897. The reversal of 7445890 is 985447.

It is not an unprimeable number, because it can be changed into a prime (7445897) 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, 11700 + ... + 12319.

It is an arithmetic number, because the mean of its divisors is an integer number (864720).

Almost surely, 2^7445890 is an apocalyptic number.

7445890 is a deficient number, since it is larger than the sum of its proper divisors (6389630).

7445890 is a wasteful number, since it uses less digits than its factorization.

7445890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24057.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 7445890 is about 2728.7158151775. The cubic root of 7445890 is about 195.2715043344.

The spelling of 7445890 in words is "seven million, four hundred forty-five thousand, eight hundred ninety".