28104151 has 4 divisors (see below), whose sum is σ = 28634472. Its totient is φ = 27573832.

The previous prime is 28104133. The next prime is 28104163. The reversal of 28104151 is 15140182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28104151 - 2¹¹ = 28102103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28104121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265081 + ... + 265186.

It is an arithmetic number, because the mean of its divisors is an integer number (7158618).

Almost surely, 2^28104151 is an apocalyptic number.

28104151 is a deficient number, since it is larger than the sum of its proper divisors (530321).

28104151 is an equidigital number, since it uses as much as digits as its factorization.

28104151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530320.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 28104151 is about 5301.3348319079. The cubic root of 28104151 is about 304.0349358223.

The spelling of 28104151 in words is "twenty-eight million, one hundred four thousand, one hundred fifty-one".