28149518 has 8 divisors (see below), whose sum is σ = 44708112. Its totient is φ = 13246816.

The previous prime is 28149503. The next prime is 28149529. The reversal of 28149518 is 81594182.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 413930 + ... + 413997.

It is an arithmetic number, because the mean of its divisors is an integer number (5588514).

Almost surely, 2^28149518 is an apocalyptic number.

28149518 is a deficient number, since it is larger than the sum of its proper divisors (16558594).

28149518 is a wasteful number, since it uses less digits than its factorization.

28149518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827946.

The product of its digits is 23040, while the sum is 38.

The square root of 28149518 is about 5305.6119345463. The cubic root of 28149518 is about 304.1984435515.

The spelling of 28149518 in words is "twenty-eight million, one hundred forty-nine thousand, five hundred eighteen".