28870435 has 16 divisors (see below), whose sum is σ = 38092032. Its totient is φ = 20831200.

The previous prime is 28870433. The next prime is 28870463. The reversal of 28870435 is 53407882.

It is not a de Polignac number, because 28870435 - 2¹ = 28870433 is a prime.

It is a super-4 number, since 4×28870435⁴ (a number of 31 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28870394 and 28870403.

It is not an unprimeable number, because it can be changed into a prime (28870433) 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, 5202 + ... + 9208.

It is an arithmetic number, because the mean of its divisors is an integer number (2380752).

Almost surely, 2^28870435 is an apocalyptic number.

28870435 is a deficient number, since it is larger than the sum of its proper divisors (9221597).

28870435 is a wasteful number, since it uses less digits than its factorization.

28870435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 28870435 is about 5373.1215322194. The cubic root of 28870435 is about 306.7734538049.

The spelling of 28870435 in words is "twenty-eight million, eight hundred seventy thousand, four hundred thirty-five".