28146999 has 8 divisors (see below), whose sum is σ = 39504640. Its totient is φ = 17777016.

The previous prime is 28146991. The next prime is 28147001. The reversal of 28146999 is 99964182.

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

It is not a de Polignac number, because 28146999 - 2³ = 28146991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28146991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246847 + ... + 246960.

It is an arithmetic number, because the mean of its divisors is an integer number (4938080).

Almost surely, 2^28146999 is an apocalyptic number.

28146999 is a deficient number, since it is larger than the sum of its proper divisors (11357641).

28146999 is a wasteful number, since it uses less digits than its factorization.

28146999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493829.

The product of its digits is 279936, while the sum is 48.

The square root of 28146999 is about 5305.3745390877. The cubic root of 28146999 is about 304.1893694028.

The spelling of 28146999 in words is "twenty-eight million, one hundred forty-six thousand, nine hundred ninety-nine".