28149795 has 32 divisors (see below), whose sum is σ = 50529600. Its totient is φ = 14867712.

The previous prime is 28149761. The next prime is 28149809. The reversal of 28149795 is 59794182.

It is not a de Polignac number, because 28149795 - 2¹⁵ = 28117027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28149795.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13759 + ... + 15671.

It is an arithmetic number, because the mean of its divisors is an integer number (1579050).

Almost surely, 2^28149795 is an apocalyptic number.

28149795 is a deficient number, since it is larger than the sum of its proper divisors (22379805).

28149795 is a wasteful number, since it uses less digits than its factorization.

28149795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036 (or 2030 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 28149795 is about 5305.6380389167. The cubic root of 28149795 is about 304.1994413506.

The spelling of 28149795 in words is "twenty-eight million, one hundred forty-nine thousand, seven hundred ninety-five".