28486617 has 4 divisors (see below), whose sum is σ = 37982160. Its totient is φ = 18991076.

The previous prime is 28486589. The next prime is 28486631. The reversal of 28486617 is 71668482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28486617 - 2⁸ = 28486361 is a prime.

It is a super-2 number, since 2×28486617² = 1622974696209378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28486657) 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, 4747767 + ... + 4747772.

It is an arithmetic number, because the mean of its divisors is an integer number (9495540).

Almost surely, 2^28486617 is an apocalyptic number.

It is an amenable number.

28486617 is a deficient number, since it is larger than the sum of its proper divisors (9495543).

28486617 is an equidigital number, since it uses as much as digits as its factorization.

28486617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9495542.

The product of its digits is 129024, while the sum is 42.

The square root of 28486617 is about 5337.2855460430. The cubic root of 28486617 is about 305.4079178675.

The spelling of 28486617 in words is "twenty-eight million, four hundred eighty-six thousand, six hundred seventeen".