28096121 has 8 divisors (see below), whose sum is σ = 29820960. Its totient is φ = 26379328.

The previous prime is 28096109. The next prime is 28096141. The reversal of 28096121 is 12169082.

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

It is a cyclic number.

It is not a de Polignac number, because 28096121 - 2¹⁸ = 27833977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28096141) 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, 6170 + ... + 9708.

It is an arithmetic number, because the mean of its divisors is an integer number (3727620).

Almost surely, 2^28096121 is an apocalyptic number.

It is an amenable number.

28096121 is a deficient number, since it is larger than the sum of its proper divisors (1724839).

28096121 is a wasteful number, since it uses less digits than its factorization.

28096121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 28096121 is about 5300.5774213759. The cubic root of 28096121 is about 304.0059764811.

The spelling of 28096121 in words is "twenty-eight million, ninety-six thousand, one hundred twenty-one".