27291648 has 52 divisors (see below), whose sum is σ = 72801608. Its totient is φ = 9093120.

The previous prime is 27291643. The next prime is 27291653. The reversal of 27291648 is 84619272.

It is an interprime number because it is at equal distance from previous prime (27291643) and next prime (27291653).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27291643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11178 + ... + 13398.

Almost surely, 2^27291648 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 27291648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36400804).

27291648 is an abundant number, since it is smaller than the sum of its proper divisors (45509960).

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

27291648 is an equidigital number, since it uses as much as digits as its factorization.

27291648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248 (or 2226 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 27291648 is about 5224.1408863085. The cubic root of 27291648 is about 301.0763116704.

It can be divided in two parts, 27 and 291648, that multiplied together give a triangular number (7874496 = T₃₉₆₈).

The spelling of 27291648 in words is "twenty-seven million, two hundred ninety-one thousand, six hundred forty-eight".