28810047 has 16 divisors (see below), whose sum is σ = 44432640. Its totient is φ = 16263552.

The previous prime is 28809997. The next prime is 28810049. The reversal of 28810047 is 74001882.

It is not a de Polignac number, because 28810047 - 2⁶ = 28809983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28809996 and 28810023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28810049) 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, 6522 + ... + 10007.

It is an arithmetic number, because the mean of its divisors is an integer number (2777040).

Almost surely, 2^28810047 is an apocalyptic number.

28810047 is a deficient number, since it is larger than the sum of its proper divisors (15622593).

28810047 is a wasteful number, since it uses less digits than its factorization.

28810047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16622.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 28810047 is about 5367.4991383325. The cubic root of 28810047 is about 306.5594128452.

The spelling of 28810047 in words is "twenty-eight million, eight hundred ten thousand, forty-seven".