28547427 has 16 divisors (see below), whose sum is σ = 39015680. Its totient is φ = 18561312.

The previous prime is 28547423. The next prime is 28547429. The reversal of 28547427 is 72474582.

It is not a de Polignac number, because 28547427 - 2² = 28547423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28547423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21258 + ... + 22560.

It is an arithmetic number, because the mean of its divisors is an integer number (2438480).

Almost surely, 2^28547427 is an apocalyptic number.

28547427 is a deficient number, since it is larger than the sum of its proper divisors (10468253).

28547427 is a wasteful number, since it uses less digits than its factorization.

28547427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its digits is 125440, while the sum is 39.

The square root of 28547427 is about 5342.9792251140. The cubic root of 28547427 is about 305.6250801477.

The spelling of 28547427 in words is "twenty-eight million, five hundred forty-seven thousand, four hundred twenty-seven".