27961192 has 64 divisors (see below), whose sum is σ = 66251520. Its totient is φ = 10779648.

The previous prime is 27961187. The next prime is 27961207. The reversal of 27961192 is 29116972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21258 + ... + 22534.

It is an arithmetic number, because the mean of its divisors is an integer number (1035180).

Almost surely, 2^27961192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27961192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33125760).

27961192 is an abundant number, since it is smaller than the sum of its proper divisors (38290328).

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

27961192 is a wasteful number, since it uses less digits than its factorization.

27961192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330 (or 1326 counting only the distinct ones).

The product of its digits is 13608, while the sum is 37.

The square root of 27961192 is about 5287.8343393113. The cubic root of 27961192 is about 303.5185419129.

The spelling of 27961192 in words is "twenty-seven million, nine hundred sixty-one thousand, one hundred ninety-two".