27840396 has 48 divisors (see below), whose sum is σ = 71366400. Its totient is φ = 8407872.

The previous prime is 27840367. The next prime is 27840413. The reversal of 27840396 is 69304872.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 2590 + ... + 7898.

It is an arithmetic number, because the mean of its divisors is an integer number (1486800).

Almost surely, 2^27840396 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 27840396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35683200).

27840396 is an abundant number, since it is smaller than the sum of its proper divisors (43526004).

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

27840396 is a wasteful number, since it uses less digits than its factorization.

27840396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358 (or 5356 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 27840396 is about 5276.3999090289. The cubic root of 27840396 is about 303.0808310746.

The spelling of 27840396 in words is "twenty-seven million, eight hundred forty thousand, three hundred ninety-six".