28512435 has 32 divisors (see below), whose sum is σ = 52346880. Its totient is φ = 12981888.

The previous prime is 28512431. The next prime is 28512439. The reversal of 28512435 is 53421582.

It is an interprime number because it is at equal distance from previous prime (28512431) and next prime (28512439).

It is not a de Polignac number, because 28512435 - 2² = 28512431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28512431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39861 + ... + 40569.

It is an arithmetic number, because the mean of its divisors is an integer number (1635840).

Almost surely, 2^28512435 is an apocalyptic number.

28512435 is a deficient number, since it is larger than the sum of its proper divisors (23834445).

28512435 is a wasteful number, since it uses less digits than its factorization.

28512435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107.

The product of its digits is 9600, while the sum is 30.

The square root of 28512435 is about 5339.7036434619. The cubic root of 28512435 is about 305.5001558086.

It can be divided in two parts, 285 and 12435, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 28512435 in words is "twenty-eight million, five hundred twelve thousand, four hundred thirty-five".