27987402 has 8 divisors (see below), whose sum is σ = 55974816. Its totient is φ = 9329132.

The previous prime is 27987391. The next prime is 27987431. The reversal of 27987402 is 20478972.

It is a sphenic number, since it is the product of 3 distinct primes.

27987402 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 2332278 + ... + 2332289.

It is an arithmetic number, because the mean of its divisors is an integer number (6996852).

Almost surely, 2^27987402 is an apocalyptic number.

27987402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27987402 is a wasteful number, since it uses less digits than its factorization.

27987402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664572.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 27987402 is about 5290.3120890927. The cubic root of 27987402 is about 303.6133487511.

The spelling of 27987402 in words is "twenty-seven million, nine hundred eighty-seven thousand, four hundred two".