28619028 has 24 divisors (see below), whose sum is σ = 74197760. Its totient is φ = 9539640.

The previous prime is 28619011. The next prime is 28619029. The reversal of 28619028 is 82091682.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28618983 and 28619001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28619029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132388 + ... + 132603.

Almost surely, 2^28619028 is an apocalyptic number.

It is an amenable number.

28619028 is an abundant number, since it is smaller than the sum of its proper divisors (45578732).

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

28619028 is a wasteful number, since it uses less digits than its factorization.

28619028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265004 (or 264996 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 28619028 is about 5349.6755041778. The cubic root of 28619028 is about 305.8803838515.

The spelling of 28619028 in words is "twenty-eight million, six hundred nineteen thousand, twenty-eight".