28636849 has 8 divisors (see below), whose sum is σ = 28984320. Its totient is φ = 28291536.

The previous prime is 28636843. The next prime is 28636871. The reversal of 28636849 is 94863682.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28636849 - 2¹³ = 28628657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28636799 and 28636808.

It is not an unprimeable number, because it can be changed into a prime (28636843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56007 + ... + 56515.

It is an arithmetic number, because the mean of its divisors is an integer number (3623040).

Almost surely, 2^28636849 is an apocalyptic number.

It is an amenable number.

28636849 is a deficient number, since it is larger than the sum of its proper divisors (347471).

28636849 is a wasteful number, since it uses less digits than its factorization.

28636849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079.

The product of its digits is 497664, while the sum is 46.

The square root of 28636849 is about 5351.3408600088. The cubic root of 28636849 is about 305.9438610044.

The spelling of 28636849 in words is "twenty-eight million, six hundred thirty-six thousand, eight hundred forty-nine".