27478976 has 56 divisors (see below), whose sum is σ = 63154560. Its totient is φ = 11619072.

The previous prime is 27478961. The next prime is 27478981. The reversal of 27478976 is 67987472.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36815 + ... + 37553.

It is an arithmetic number, because the mean of its divisors is an integer number (1127760).

Almost surely, 2^27478976 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 27478976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31577280).

27478976 is an abundant number, since it is smaller than the sum of its proper divisors (35675584).

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

27478976 is an equidigital number, since it uses as much as digits as its factorization.

27478976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 831 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 27478976 is about 5242.0392978306. The cubic root of 27478976 is about 301.7635972847.

The spelling of 27478976 in words is "twenty-seven million, four hundred seventy-eight thousand, nine hundred seventy-six".