28862028 has 96 divisors (see below), whose sum is σ = 82147520. Its totient is φ = 8709120.

The previous prime is 28862027. The next prime is 28862087. The reversal of 28862028 is 82026882.

28862028 is a `hidden beast` number, since 2 + 8 + 8 + 620 + 28 = 666.

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 = 28861983 and 28862001.

It is not an unprimeable number, because it can be changed into a prime (28862021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85476 + ... + 85812.

Almost surely, 2^28862028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28862028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41073760).

28862028 is an abundant number, since it is smaller than the sum of its proper divisors (53285492).

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

28862028 is a wasteful number, since it uses less digits than its factorization.

28862028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 28862028 is about 5372.3391553401. The cubic root of 28862028 is about 306.7436736878.

The spelling of 28862028 in words is "twenty-eight million, eight hundred sixty-two thousand, twenty-eight".