28895121 has 12 divisors (see below), whose sum is σ = 44192772. Its totient is φ = 18130176.

The previous prime is 28895101. The next prime is 28895129. The reversal of 28895121 is 12159882.

It can be written as a sum of positive squares in 2 ways, for example, as 17766225 + 11128896 = 4215^2 + 3336^2 .

It is not a de Polignac number, because 28895121 - 2¹⁷ = 28764049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28895129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94276 + ... + 94581.

It is an arithmetic number, because the mean of its divisors is an integer number (3682731).

Almost surely, 2^28895121 is an apocalyptic number.

It is an amenable number.

28895121 is a deficient number, since it is larger than the sum of its proper divisors (15297651).

28895121 is a wasteful number, since it uses less digits than its factorization.

28895121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188880 (or 188877 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 28895121 is about 5375.4182162879. The cubic root of 28895121 is about 306.8608656277.

The spelling of 28895121 in words is "twenty-eight million, eight hundred ninety-five thousand, one hundred twenty-one".