28890127 has 8 divisors (see below), whose sum is σ = 34755200. Its totient is φ = 23459544.

The previous prime is 28890097. The next prime is 28890131. The reversal of 28890127 is 72109882.

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 28890127 - 2¹⁵ = 28857359 is a prime.

It is a super-2 number, since 2×28890127² = 1669278876152258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28890137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108477 + ... + 108742.

It is an arithmetic number, because the mean of its divisors is an integer number (4344400).

Almost surely, 2^28890127 is an apocalyptic number.

28890127 is a deficient number, since it is larger than the sum of its proper divisors (5865073).

28890127 is a wasteful number, since it uses less digits than its factorization.

28890127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217245.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 28890127 is about 5374.9536742190. The cubic root of 28890127 is about 306.8431861556.

The spelling of 28890127 in words is "twenty-eight million, eight hundred ninety thousand, one hundred twenty-seven".