28383886 has 16 divisors (see below), whose sum is σ = 44642304. Its totient is φ = 13509144.

The previous prime is 28383881. The next prime is 28383889. The reversal of 28383886 is 68838382.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28383881) 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, 8875 + ... + 11641.

It is an arithmetic number, because the mean of its divisors is an integer number (2790144).

Almost surely, 2^28383886 is an apocalyptic number.

28383886 is a deficient number, since it is larger than the sum of its proper divisors (16258418).

28383886 is a wasteful number, since it uses less digits than its factorization.

28383886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015.

The product of its digits is 442368, while the sum is 46.

The square root of 28383886 is about 5327.6529541628. The cubic root of 28383886 is about 305.0403458228.

It can be divided in two parts, 2838 and 3886, that added together give a square (6724 = 82²).

The spelling of 28383886 in words is "twenty-eight million, three hundred eighty-three thousand, eight hundred eighty-six".