28495869 has 4 divisors (see below), whose sum is σ = 37994496. Its totient is φ = 18997244.

The previous prime is 28495867. The next prime is 28495889. The reversal of 28495869 is 96859482.

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 28495869 - 2¹ = 28495867 is a prime.

It is a super-2 number, since 2×28495869² = 1624029100130322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28495867) 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, 4749309 + ... + 4749314.

It is an arithmetic number, because the mean of its divisors is an integer number (9498624).

Almost surely, 2^28495869 is an apocalyptic number.

It is an amenable number.

28495869 is a deficient number, since it is larger than the sum of its proper divisors (9498627).

28495869 is an equidigital number, since it uses as much as digits as its factorization.

28495869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9498626.

The product of its digits is 1244160, while the sum is 51.

The square root of 28495869 is about 5338.1522083957. The cubic root of 28495869 is about 305.4409781663.

The spelling of 28495869 in words is "twenty-eight million, four hundred ninety-five thousand, eight hundred sixty-nine".