28405195 has 32 divisors (see below), whose sum is σ = 42319872. Its totient is φ = 17822592.

The previous prime is 28405187. The next prime is 28405213. The reversal of 28405195 is 59150482.

It is a cyclic number.

It is not a de Polignac number, because 28405195 - 2³ = 28405187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28405195.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73974 + ... + 74356.

It is an arithmetic number, because the mean of its divisors is an integer number (1322496).

Almost surely, 2^28405195 is an apocalyptic number.

28405195 is a deficient number, since it is larger than the sum of its proper divisors (13914677).

28405195 is a wasteful number, since it uses less digits than its factorization.

28405195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 28405195 is about 5329.6524276917. The cubic root of 28405195 is about 305.1166623494.

The spelling of 28405195 in words is "twenty-eight million, four hundred five thousand, one hundred ninety-five".