28445942 has 16 divisors (see below), whose sum is σ = 49198752. Its totient is φ = 12082560.

The previous prime is 28445939. The next prime is 28445957. The reversal of 28445942 is 24954482.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28445896 and 28445905.

It is a congruent number.

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, 7409 + ... + 10572.

It is an arithmetic number, because the mean of its divisors is an integer number (3074922).

Almost surely, 2^28445942 is an apocalyptic number.

28445942 is a deficient number, since it is larger than the sum of its proper divisors (20752810).

28445942 is a wasteful number, since it uses less digits than its factorization.

28445942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18103.

The product of its digits is 92160, while the sum is 38.

The square root of 28445942 is about 5333.4737273188. The cubic root of 28445942 is about 305.2624883572.

The spelling of 28445942 in words is "twenty-eight million, four hundred forty-five thousand, nine hundred forty-two".