28630047 has 8 divisors (see below), whose sum is σ = 39489840. Its totient is φ = 18428480.

The previous prime is 28629977. The next prime is 28630051. The reversal of 28630047 is 74003682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28630047 - 2¹⁰ = 28629023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28629996 and 28630023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28632047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164454 + ... + 164627.

It is an arithmetic number, because the mean of its divisors is an integer number (4936230).

Almost surely, 2^28630047 is an apocalyptic number.

28630047 is a deficient number, since it is larger than the sum of its proper divisors (10859793).

28630047 is a wasteful number, since it uses less digits than its factorization.

28630047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329113.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 28630047 is about 5350.7052806149. The cubic root of 28630047 is about 305.9196358655.

The spelling of 28630047 in words is "twenty-eight million, six hundred thirty thousand, forty-seven".