28055396 has 12 divisors (see below), whose sum is σ = 49168560. Its totient is φ = 14007240.

The previous prime is 28055387. The next prime is 28055413. The reversal of 28055396 is 69355082.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1790 + ... + 7701.

It is an arithmetic number, because the mean of its divisors is an integer number (4097380).

Almost surely, 2^28055396 is an apocalyptic number.

It is an amenable number.

28055396 is a deficient number, since it is larger than the sum of its proper divisors (21113164).

28055396 is a wasteful number, since it uses less digits than its factorization.

28055396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10234 (or 10232 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 28055396 is about 5296.7344656873. The cubic root of 28055396 is about 303.8590210813.

The spelling of 28055396 in words is "twenty-eight million, fifty-five thousand, three hundred ninety-six".