28156876 has 24 divisors (see below), whose sum is σ = 56093184. Its totient is φ = 12241680.

The previous prime is 28156871. The next prime is 28156927. The reversal of 28156876 is 67865182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28156871) 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, 12900 + ... + 14923.

It is an arithmetic number, because the mean of its divisors is an integer number (2337216).

Almost surely, 2^28156876 is an apocalyptic number.

It is an amenable number.

28156876 is a deficient number, since it is larger than the sum of its proper divisors (27936308).

28156876 is a wasteful number, since it uses less digits than its factorization.

28156876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27861 (or 27859 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 28156876 is about 5306.3053059544. The cubic root of 28156876 is about 304.2249460438.

The spelling of 28156876 in words is "twenty-eight million, one hundred fifty-six thousand, eight hundred seventy-six".