28540635 has 16 divisors (see below), whose sum is σ = 45770496. Its totient is φ = 15186528.

The previous prime is 28540627. The next prime is 28540643. The reversal of 28540635 is 53604582.

It is an interprime number because it is at equal distance from previous prime (28540627) and next prime (28540643).

It is not a de Polignac number, because 28540635 - 2³ = 28540627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28540596 and 28540605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5352 + ... + 9258.

It is an arithmetic number, because the mean of its divisors is an integer number (2860656).

Almost surely, 2^28540635 is an apocalyptic number.

28540635 is a deficient number, since it is larger than the sum of its proper divisors (17229861).

28540635 is a wasteful number, since it uses less digits than its factorization.

28540635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 28540635 is about 5342.3435868540. The cubic root of 28540635 is about 305.6008401325.

The spelling of 28540635 in words is "twenty-eight million, five hundred forty thousand, six hundred thirty-five".