28783206 has 12 divisors (see below), whose sum is σ = 62363652. Its totient is φ = 9594396.

The previous prime is 28783199. The next prime is 28783217. The reversal of 28783206 is 60238782.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 799516 + ... + 799551.

It is an arithmetic number, because the mean of its divisors is an integer number (5196971).

Almost surely, 2^28783206 is an apocalyptic number.

28783206 is an abundant number, since it is smaller than the sum of its proper divisors (33580446).

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

28783206 is a wasteful number, since it uses less digits than its factorization.

28783206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599075 (or 1599072 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28783206 is about 5364.9982292635. The cubic root of 28783206 is about 306.4641808143.

It can be divided in two parts, 2878 and 3206, that added together give a square (6084 = 78²).

The spelling of 28783206 in words is "twenty-eight million, seven hundred eighty-three thousand, two hundred six".