28056942 has 20 divisors (see below), whose sum is σ = 62868696. Its totient is φ = 9352260.

The previous prime is 28056907. The next prime is 28056943. The reversal of 28056942 is 24965082.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28056897 and 28056906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056943) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 86434 + ... + 86757.

Almost surely, 2^28056942 is an apocalyptic number.

28056942 is an abundant number, since it is smaller than the sum of its proper divisors (34811754).

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

28056942 is a wasteful number, since it uses less digits than its factorization.

28056942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173205 (or 173196 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28056942 is about 5296.8804026521. The cubic root of 28056942 is about 303.8646023893.

The spelling of 28056942 in words is "twenty-eight million, fifty-six thousand, nine hundred forty-two".