28335660 has 24 divisors (see below), whose sum is σ = 79340016. Its totient is φ = 7556160.

The previous prime is 28335649. The next prime is 28335661. The reversal of 28335660 is 6653382.

It is not an unprimeable number, because it can be changed into a prime (28335661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236071 + ... + 236190.

It is an arithmetic number, because the mean of its divisors is an integer number (3305834).

Almost surely, 2^28335660 is an apocalyptic number.

28335660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28335660 is an abundant number, since it is smaller than the sum of its proper divisors (51004356).

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

28335660 is a wasteful number, since it uses less digits than its factorization.

28335660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472273 (or 472271 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 28335660 is about 5323.1250220148. The cubic root of 28335660 is about 304.8674870024.

The spelling of 28335660 in words is "twenty-eight million, three hundred thirty-five thousand, six hundred sixty".