28647087 has 16 divisors (see below), whose sum is σ = 43925760. Its totient is φ = 16267392.

The previous prime is 28647077. The next prime is 28647089. The reversal of 28647087 is 78074682.

It is not a de Polignac number, because 28647087 - 2⁴ = 28647071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28647089) 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, 762 + ... + 7607.

It is an arithmetic number, because the mean of its divisors is an integer number (2745360).

Almost surely, 2^28647087 is an apocalyptic number.

28647087 is a deficient number, since it is larger than the sum of its proper divisors (15278673).

28647087 is a wasteful number, since it uses less digits than its factorization.

28647087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8542.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 28647087 is about 5352.2973572103. The cubic root of 28647087 is about 305.9803161331.

The spelling of 28647087 in words is "twenty-eight million, six hundred forty-seven thousand, eighty-seven".