28888836 has 12 divisors (see below), whose sum is σ = 67407312. Its totient is φ = 9629608.

The previous prime is 28888771. The next prime is 28888841. The reversal of 28888836 is 63888882.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1203690 + ... + 1203713.

It is an arithmetic number, because the mean of its divisors is an integer number (5617276).

Almost surely, 2^28888836 is an apocalyptic number.

It is an amenable number.

28888836 is an abundant number, since it is smaller than the sum of its proper divisors (38518476).

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

28888836 is a wasteful number, since it uses less digits than its factorization.

28888836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407410 (or 2407408 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 51.

The square root of 28888836 is about 5374.8335788190. The cubic root of 28888836 is about 306.8386155001.

The spelling of 28888836 in words is "twenty-eight million, eight hundred eighty-eight thousand, eight hundred thirty-six".