28910996 has 12 divisors (see below), whose sum is σ = 50644020. Its totient is φ = 14441280.

The previous prime is 28910971. The next prime is 28911019. The reversal of 28910996 is 69901982.

It can be written as a sum of positive squares in 2 ways, for example, as 26894596 + 2016400 = 5186^2 + 1420^2 .

It is a congruent number.

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, 1976 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (4220335).

Almost surely, 2^28910996 is an apocalyptic number.

It is an amenable number.

28910996 is a deficient number, since it is larger than the sum of its proper divisors (21733024).

28910996 is a wasteful number, since it uses less digits than its factorization.

28910996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114 (or 7112 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 28910996 is about 5376.8946428213. The cubic root of 28910996 is about 306.9170518652.

The spelling of 28910996 in words is "twenty-eight million, nine hundred ten thousand, nine hundred ninety-six".