28336121 has 8 divisors (see below), whose sum is σ = 31139424. Its totient is φ = 25570720.

The previous prime is 28336111. The next prime is 28336129. The reversal of 28336121 is 12163382.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28336121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28336129) 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, 7895 + ... + 10908.

It is an arithmetic number, because the mean of its divisors is an integer number (3892428).

Almost surely, 2^28336121 is an apocalyptic number.

It is an amenable number.

28336121 is a deficient number, since it is larger than the sum of its proper divisors (2803303).

28336121 is a wasteful number, since it uses less digits than its factorization.

28336121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18951.

The product of its digits is 1728, while the sum is 26.

The square root of 28336121 is about 5323.1683234705. The cubic root of 28336121 is about 304.8691403155.

It can be divided in two parts, 283361 and 21, that added together give a palindrome (283382).

The spelling of 28336121 in words is "twenty-eight million, three hundred thirty-six thousand, one hundred twenty-one".