28618912 has 24 divisors (see below), whose sum is σ = 64393056. Its totient is φ = 12265152.

The previous prime is 28618903. The next prime is 28618937. The reversal of 28618912 is 21981682.

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, 63658 + ... + 64105.

It is an arithmetic number, because the mean of its divisors is an integer number (2683044).

Almost surely, 2^28618912 is an apocalyptic number.

It is an amenable number.

28618912 is an abundant number, since it is smaller than the sum of its proper divisors (35774144).

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

28618912 is a wasteful number, since it uses less digits than its factorization.

28618912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127780 (or 127772 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 28618912 is about 5349.6646623877. The cubic root of 28618912 is about 305.8799705813.

The spelling of 28618912 in words is "twenty-eight million, six hundred eighteen thousand, nine hundred twelve".