28135653 has 24 divisors (see below), whose sum is σ = 46999008. Its totient is φ = 14839776.

The previous prime is 28135649. The next prime is 28135661. The reversal of 28135653 is 35653182.

It is not a de Polignac number, because 28135653 - 2² = 28135649 is a prime.

It is a super-2 number, since 2×28135653² = 1583229939472818, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28135643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5451 + ... + 9272.

It is an arithmetic number, because the mean of its divisors is an integer number (1958292).

Almost surely, 2^28135653 is an apocalyptic number.

It is an amenable number.

28135653 is a deficient number, since it is larger than the sum of its proper divisors (18863355).

28135653 is a wasteful number, since it uses less digits than its factorization.

28135653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14753 (or 14746 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 28135653 is about 5304.3051382815. The cubic root of 28135653 is about 304.1484911973.

The spelling of 28135653 in words is "twenty-eight million, one hundred thirty-five thousand, six hundred fifty-three".