28277956 has 12 divisors (see below), whose sum is σ = 56555968. Its totient is φ = 12119112.

The previous prime is 28277941. The next prime is 28277957. The reversal of 28277956 is 65977282.

28277956 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28277957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504936 + ... + 504991.

Almost surely, 2^28277956 is an apocalyptic number.

It is an amenable number.

28277956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28277956 is a wasteful number, since it uses less digits than its factorization.

28277956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009938 (or 1009936 counting only the distinct ones).

The product of its digits is 423360, while the sum is 46.

The square root of 28277956 is about 5317.7021353212. The cubic root of 28277956 is about 304.6603977874.

The spelling of 28277956 in words is "twenty-eight million, two hundred seventy-seven thousand, nine hundred fifty-six".