28089636029 has 24 divisors (see below), whose sum is σ = 36140399232. Its totient is φ = 21258436320.

The previous prime is 28089636023. The next prime is 28089636073. The reversal of 28089636029 is 92063698082.

It is a happy number.

It is not a de Polignac number, because 28089636029 - 2²⁰ = 28088587453 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28089636023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243617 + ... + 339894.

It is an arithmetic number, because the mean of its divisors is an integer number (1505849968).

Almost surely, 2^28089636029 is an apocalyptic number.

It is an amenable number.

28089636029 is a deficient number, since it is larger than the sum of its proper divisors (8050763203).

28089636029 is a wasteful number, since it uses less digits than its factorization.

28089636029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583577 (or 583554 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 28089636029 in words is "twenty-eight billion, eighty-nine million, six hundred thirty-six thousand, twenty-nine".