28387195 has 16 divisors (see below), whose sum is σ = 36211968. Its totient is φ = 21288960.

The previous prime is 28387193. The next prime is 28387199. The reversal of 28387195 is 59178382.

It is not a de Polignac number, because 28387195 - 2¹ = 28387193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28387193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28150 + ... + 29140.

It is an arithmetic number, because the mean of its divisors is an integer number (2263248).

Almost surely, 2^28387195 is an apocalyptic number.

28387195 is the 3370-th heptagonal number.

28387195 is a deficient number, since it is larger than the sum of its proper divisors (7824773).

28387195 is a wasteful number, since it uses less digits than its factorization.

28387195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350.

The product of its digits is 120960, while the sum is 43.

The square root of 28387195 is about 5327.9634946197. The cubic root of 28387195 is about 305.0521992536.

It can be divided in two parts, 28387 and 195, that added together give a palindrome (28582).

The spelling of 28387195 in words is "twenty-eight million, three hundred eighty-seven thousand, one hundred ninety-five".