28683642 has 16 divisors (see below), whose sum is σ = 61780320. Its totient is φ = 8825712.

The previous prime is 28683601. The next prime is 28683659. The reversal of 28683642 is 24638682.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 28683642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183792 + ... + 183947.

It is an arithmetic number, because the mean of its divisors is an integer number (3861270).

Almost surely, 2^28683642 is an apocalyptic number.

28683642 is an abundant number, since it is smaller than the sum of its proper divisors (33096678).

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

28683642 is a wasteful number, since it uses less digits than its factorization.

28683642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367757.

The product of its digits is 110592, while the sum is 39.

The square root of 28683642 is about 5355.7111572601. The cubic root of 28683642 is about 306.1104091306.

The spelling of 28683642 in words is "twenty-eight million, six hundred eighty-three thousand, six hundred forty-two".