28876047 has 16 divisors (see below), whose sum is σ = 40965120. Its totient is φ = 18029952.

The previous prime is 28876031. The next prime is 28876049. The reversal of 28876047 is 74067882.

It is not a de Polignac number, because 28876047 - 2⁴ = 28876031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28876049) 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, 10104 + ... + 12642.

It is an arithmetic number, because the mean of its divisors is an integer number (2560320).

Almost surely, 2^28876047 is an apocalyptic number.

28876047 is a deficient number, since it is larger than the sum of its proper divisors (12089073).

28876047 is a wasteful number, since it uses less digits than its factorization.

28876047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782.

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

The square root of 28876047 is about 5373.6437358649. The cubic root of 28876047 is about 306.7933299756.

The spelling of 28876047 in words is "twenty-eight million, eight hundred seventy-six thousand, forty-seven".