28486547 has 4 divisors (see below), whose sum is σ = 28694616. Its totient is φ = 28278480.

The previous prime is 28486541. The next prime is 28486561. The reversal of 28486547 is 74568482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74568482 = 2 ⋅37284241.

It is a cyclic number.

It is not a de Polignac number, because 28486547 - 2¹⁶ = 28421011 is a prime.

It is a super-2 number, since 2×28486547² = 1622966719966418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28486498 and 28486507.

It is not an unprimeable number, because it can be changed into a prime (28486541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103829 + ... + 104102.

It is an arithmetic number, because the mean of its divisors is an integer number (7173654).

Almost surely, 2^28486547 is an apocalyptic number.

28486547 is a deficient number, since it is larger than the sum of its proper divisors (208069).

28486547 is a wasteful number, since it uses less digits than its factorization.

28486547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208068.

The product of its digits is 430080, while the sum is 44.

The square root of 28486547 is about 5337.2789883985. The cubic root of 28486547 is about 305.4076677083.

The spelling of 28486547 in words is "twenty-eight million, four hundred eighty-six thousand, five hundred forty-seven".