27855956 has 6 divisors (see below), whose sum is σ = 48747930. Its totient is φ = 13927976.

The previous prime is 27855929. The next prime is 27855983. The reversal of 27855956 is 65955872.

It is an interprime number because it is at equal distance from previous prime (27855929) and next prime (27855983).

It can be written as a sum of positive squares in only one way, i.e., 27667600 + 188356 = 5260^2 + 434^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27855956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3481991 + ... + 3481998.

It is an arithmetic number, because the mean of its divisors is an integer number (8124655).

Almost surely, 2^27855956 is an apocalyptic number.

It is an amenable number.

27855956 is a deficient number, since it is larger than the sum of its proper divisors (20891974).

27855956 is a wasteful number, since it uses less digits than its factorization.

27855956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963993 (or 6963991 counting only the distinct ones).

The product of its digits is 756000, while the sum is 47.

The square root of 27855956 is about 5277.8741932714. The cubic root of 27855956 is about 303.1372845271.

The spelling of 27855956 in words is "twenty-seven million, eight hundred fifty-five thousand, nine hundred fifty-six".