28689206 has 32 divisors (see below), whose sum is σ = 54062400. Its totient is φ = 11346048.

The previous prime is 28689197. The next prime is 28689209. The reversal of 28689206 is 60298682.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28689209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7310 + ... + 10526.

It is an arithmetic number, because the mean of its divisors is an integer number (1689450).

Almost surely, 2^28689206 is an apocalyptic number.

28689206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28689206 is a deficient number, since it is larger than the sum of its proper divisors (25373194).

28689206 is a wasteful number, since it uses less digits than its factorization.

28689206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253 (or 3239 counting only the distinct ones).

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

The square root of 28689206 is about 5356.2305775611. The cubic root of 28689206 is about 306.1302007620.

The spelling of 28689206 in words is "twenty-eight million, six hundred eighty-nine thousand, two hundred six".