28156195 has 16 divisors (see below), whose sum is σ = 35707680. Its totient is φ = 21313440.

The previous prime is 28156189. The next prime is 28156201. The reversal of 28156195 is 59165182.

It is an interprime number because it is at equal distance from previous prime (28156189) and next prime (28156201).

It is not a de Polignac number, because 28156195 - 2⁷ = 28156067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33885 + ... + 34705.

It is an arithmetic number, because the mean of its divisors is an integer number (2231730).

Almost surely, 2^28156195 is an apocalyptic number.

28156195 is a deficient number, since it is larger than the sum of its proper divisors (7551485).

28156195 is an frugal number, since it uses more digits than its factorization.

28156195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 845 counting only the distinct ones).

The product of its digits is 21600, while the sum is 37.

The square root of 28156195 is about 5306.2411366239. The cubic root of 28156195 is about 304.2224933705. Note that the first 3 decimals are identical.

The spelling of 28156195 in words is "twenty-eight million, one hundred fifty-six thousand, one hundred ninety-five".