28617423 has 4 divisors (see below), whose sum is σ = 38156568. Its totient is φ = 19078280.

The previous prime is 28617397. The next prime is 28617427. The reversal of 28617423 is 32471682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28617423 - 2¹⁴ = 28601039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28617427) 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, 4769568 + ... + 4769573.

It is an arithmetic number, because the mean of its divisors is an integer number (9539142).

Almost surely, 2^28617423 is an apocalyptic number.

28617423 is a deficient number, since it is larger than the sum of its proper divisors (9539145).

28617423 is an equidigital number, since it uses as much as digits as its factorization.

28617423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9539144.

The product of its digits is 16128, while the sum is 33.

The square root of 28617423 is about 5349.5254929760. The cubic root of 28617423 is about 305.8746656606.

The spelling of 28617423 in words is "twenty-eight million, six hundred seventeen thousand, four hundred twenty-three".