28442835 has 24 divisors (see below), whose sum is σ = 51446304. Its totient is φ = 14509440.

The previous prime is 28442833. The next prime is 28442837. The reversal of 28442835 is 53824482.

It is an interprime number because it is at equal distance from previous prime (28442833) and next prime (28442837).

It is not a de Polignac number, because 28442835 - 2¹ = 28442833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28442835.

It is not an unprimeable number, because it can be changed into a prime (28442831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12706 + ... + 14775.

It is an arithmetic number, because the mean of its divisors is an integer number (2143596).

Almost surely, 2^28442835 is an apocalyptic number.

28442835 is a deficient number, since it is larger than the sum of its proper divisors (23003469).

28442835 is a wasteful number, since it uses less digits than its factorization.

28442835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27515 (or 27512 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 28442835 is about 5333.1824457823. The cubic root of 28442835 is about 305.2513738828.

The spelling of 28442835 in words is "twenty-eight million, four hundred forty-two thousand, eight hundred thirty-five".