28099467 has 60 divisors (see below), whose sum is σ = 47892768. Its totient is φ = 16394400.

The previous prime is 28099451. The next prime is 28099493. The reversal of 28099467 is 76499082.

It is a happy number.

It is not a de Polignac number, because 28099467 - 2⁴ = 28099451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28099417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 460617 + ... + 460677.

Almost surely, 2^28099467 is an apocalyptic number.

28099467 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28099467 is a deficient number, since it is larger than the sum of its proper divisors (19793301).

28099467 is a wasteful number, since it uses less digits than its factorization.

28099467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 28099467 is about 5300.8930379701. The cubic root of 28099467 is about 304.0180441448.

The spelling of 28099467 in words is "twenty-eight million, ninety-nine thousand, four hundred sixty-seven".