27961896 has 16 divisors (see below), whose sum is σ = 69904800. Its totient is φ = 9320624.

The previous prime is 27961891. The next prime is 27961909. The reversal of 27961896 is 69816972.

It is not an unprimeable number, because it can be changed into a prime (27961891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582516 + ... + 582563.

It is an arithmetic number, because the mean of its divisors is an integer number (4369050).

Almost surely, 2^27961896 is an apocalyptic number.

It is an amenable number.

27961896 is an abundant number, since it is smaller than the sum of its proper divisors (41942904).

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

27961896 is a wasteful number, since it uses less digits than its factorization.

27961896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165088 (or 1165084 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 27961896 is about 5287.9009067871. The cubic root of 27961896 is about 303.5210891966.

The spelling of 27961896 in words is "twenty-seven million, nine hundred sixty-one thousand, eight hundred ninety-six".