28149579 has 8 divisors (see below), whose sum is σ = 41703120. Its totient is φ = 18766368.

The previous prime is 28149559. The next prime is 28149593. The reversal of 28149579 is 97594182.

It is not a de Polignac number, because 28149579 - 2⁵ = 28149547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28149529) 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, 521262 + ... + 521315.

It is an arithmetic number, because the mean of its divisors is an integer number (5212890).

Almost surely, 2^28149579 is an apocalyptic number.

28149579 is a deficient number, since it is larger than the sum of its proper divisors (13553541).

28149579 is a wasteful number, since it uses less digits than its factorization.

28149579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042586 (or 1042580 counting only the distinct ones).

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

The square root of 28149579 is about 5305.6176831732. The cubic root of 28149579 is about 304.1986632840.

The spelling of 28149579 in words is "twenty-eight million, one hundred forty-nine thousand, five hundred seventy-nine".