28869435 has 48 divisors (see below), whose sum is σ = 58758336. Its totient is φ = 12835584.

The previous prime is 28869433. The next prime is 28869437. The reversal of 28869435 is 53496882.

It is an interprime number because it is at equal distance from previous prime (28869433) and next prime (28869437).

It is not a de Polignac number, because 28869435 - 2¹ = 28869433 is a prime.

It is a hoax number, since the sum of its digits (45) 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 (45).

It is not an unprimeable number, because it can be changed into a prime (28869433) 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 47 ways as a sum of consecutive naturals, for example, 10417 + ... + 12893.

It is an arithmetic number, because the mean of its divisors is an integer number (1224132).

Almost surely, 2^28869435 is an apocalyptic number.

28869435 is an abundant number, since it is smaller than the sum of its proper divisors (29888901).

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

28869435 is a wasteful number, since it uses less digits than its factorization.

28869435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532 (or 2529 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 28869435 is about 5373.0284756364. The cubic root of 28869435 is about 306.7699118078.

It can be divided in two parts, 2886 and 9435, that added together give a palindrome (12321).

The spelling of 28869435 in words is "twenty-eight million, eight hundred sixty-nine thousand, four hundred thirty-five".