28254121 has 8 divisors (see below), whose sum is σ = 33990080. Its totient is φ = 22943088.

The previous prime is 28254103. The next prime is 28254157. The reversal of 28254121 is 12145282.

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

It is not a de Polignac number, because 28254121 - 2⁵ = 28254089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28257121) 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, 106086 + ... + 106351.

It is an arithmetic number, because the mean of its divisors is an integer number (4248760).

Almost surely, 2^28254121 is an apocalyptic number.

It is an amenable number.

28254121 is a deficient number, since it is larger than the sum of its proper divisors (5735959).

28254121 is a wasteful number, since it uses less digits than its factorization.

28254121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212463.

The product of its digits is 1280, while the sum is 25.

The square root of 28254121 is about 5315.4605633002. The cubic root of 28254121 is about 304.5747760667.

The spelling of 28254121 in words is "twenty-eight million, two hundred fifty-four thousand, one hundred twenty-one".