28406179 has 4 divisors (see below), whose sum is σ = 28610680. Its totient is φ = 28201680.

The previous prime is 28406143. The next prime is 28406207. The reversal of 28406179 is 97160482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97160482 = 2 ⋅48580241.

It is a cyclic number.

It is not a de Polignac number, because 28406179 - 2¹³ = 28397987 is a prime.

It is a super-2 number, since 2×28406179² = 1613822010760082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28406129) by changing a digit.

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, 102042 + ... + 102319.

It is an arithmetic number, because the mean of its divisors is an integer number (7152670).

Almost surely, 2^28406179 is an apocalyptic number.

28406179 is a deficient number, since it is larger than the sum of its proper divisors (204501).

28406179 is a wasteful number, since it uses less digits than its factorization.

28406179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204500.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 28406179 is about 5329.7447406044. The cubic root of 28406179 is about 305.1201855468.

The spelling of 28406179 in words is "twenty-eight million, four hundred six thousand, one hundred seventy-nine".