28287435 has 16 divisors (see below), whose sum is σ = 49374720. Its totient is φ = 13715040.

The previous prime is 28287433. The next prime is 28287437. The reversal of 28287435 is 53478282.

It is an interprime number because it is at equal distance from previous prime (28287433) and next prime (28287437).

It is not a de Polignac number, because 28287435 - 2¹ = 28287433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28287393 and 28287402.

It is not an unprimeable number, because it can be changed into a prime (28287433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85555 + ... + 85884.

It is an arithmetic number, because the mean of its divisors is an integer number (3085920).

Almost surely, 2^28287435 is an apocalyptic number.

28287435 is a deficient number, since it is larger than the sum of its proper divisors (21087285).

28287435 is a wasteful number, since it uses less digits than its factorization.

28287435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171458.

The product of its digits is 107520, while the sum is 39.

The square root of 28287435 is about 5318.5933290674. The cubic root of 28287435 is about 304.6944355292.

The spelling of 28287435 in words is "twenty-eight million, two hundred eighty-seven thousand, four hundred thirty-five".