28872102 has 16 divisors (see below), whose sum is σ = 65993472. Its totient is φ = 8249160.

The previous prime is 28872101. The next prime is 28872113. The reversal of 28872102 is 20127882.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28872102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28872101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343674 + ... + 343757.

It is an arithmetic number, because the mean of its divisors is an integer number (4124592).

Almost surely, 2^28872102 is an apocalyptic number.

28872102 is an abundant number, since it is smaller than the sum of its proper divisors (37121370).

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

28872102 is a wasteful number, since it uses less digits than its factorization.

28872102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687443.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 28872102 is about 5373.2766539608. The cubic root of 28872102 is about 306.7793581324.

Adding to 28872102 its reverse (20127882), we get a palindrome (48999984).

It can be divided in two parts, 288 and 72102, that added together give a triangular number (72390 = T₃₈₀).

The spelling of 28872102 in words is "twenty-eight million, eight hundred seventy-two thousand, one hundred two".