27911796 has 72 divisors (see below), whose sum is σ = 73288320. Its totient is φ = 8257920.

The previous prime is 27911789. The next prime is 27911797. The reversal of 27911796 is 69711972.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27911797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68040 + ... + 68448.

Almost surely, 2^27911796 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 27911796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36644160).

27911796 is an abundant number, since it is smaller than the sum of its proper divisors (45376524).

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

27911796 is a wasteful number, since it uses less digits than its factorization.

27911796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 472 counting only the distinct ones).

The product of its digits is 47628, while the sum is 42.

The square root of 27911796 is about 5283.1615534640. The cubic root of 27911796 is about 303.3397054841.

The spelling of 27911796 in words is "twenty-seven million, nine hundred eleven thousand, seven hundred ninety-six".