28499135 has 24 divisors (see below), whose sum is σ = 40260240. Its totient is φ = 19307904.

The previous prime is 28499131. The next prime is 28499143. The reversal of 28499135 is 53199482.

It is not a de Polignac number, because 28499135 - 2² = 28499131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28499092 and 28499101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28499131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21152 + ... + 22458.

It is an arithmetic number, because the mean of its divisors is an integer number (1677510).

Almost surely, 2^28499135 is an apocalyptic number.

28499135 is a deficient number, since it is larger than the sum of its proper divisors (11761105).

28499135 is a wasteful number, since it uses less digits than its factorization.

28499135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415 (or 1408 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 28499135 is about 5338.4581107282. The cubic root of 28499135 is about 305.4526469000.

The spelling of 28499135 in words is "twenty-eight million, four hundred ninety-nine thousand, one hundred thirty-five".