28689260 has 24 divisors (see below), whose sum is σ = 62192256. Its totient is φ = 11105280.

The previous prime is 28689247. The next prime is 28689263. The reversal of 28689260 is 6298682.

It is not an unprimeable number, because it can be changed into a prime (28689263) 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, 22517 + ... + 23756.

It is an arithmetic number, because the mean of its divisors is an integer number (2591344).

Almost surely, 2^28689260 is an apocalyptic number.

28689260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28689260 is an abundant number, since it is smaller than the sum of its proper divisors (33502996).

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

28689260 is a wasteful number, since it uses less digits than its factorization.

28689260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46313 (or 46311 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 28689260 is about 5356.2356184171. The cubic root of 28689260 is about 306.1303928321.

The spelling of 28689260 in words is "twenty-eight million, six hundred eighty-nine thousand, two hundred sixty".