28373899 has 8 divisors (see below), whose sum is σ = 28827920. Its totient is φ = 27923616.

The previous prime is 28373893. The next prime is 28373909. The reversal of 28373899 is 99837382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28373899 - 2⁷ = 28373771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28373893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16969 + ... + 18565.

It is an arithmetic number, because the mean of its divisors is an integer number (3603490).

Almost surely, 2^28373899 is an apocalyptic number.

28373899 is a deficient number, since it is larger than the sum of its proper divisors (454021).

28373899 is a wasteful number, since it uses less digits than its factorization.

28373899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869.

The product of its digits is 653184, while the sum is 49.

The square root of 28373899 is about 5326.7155921825. The cubic root of 28373899 is about 305.0045650127.

The spelling of 28373899 in words is "twenty-eight million, three hundred seventy-three thousand, eight hundred ninety-nine".