27432987 has 8 divisors (see below), whose sum is σ = 37040640. Its totient is φ = 18057000.

The previous prime is 27432983. The next prime is 27433009. The reversal of 27432987 is 78923472.

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

It is not a de Polignac number, because 27432987 - 2² = 27432983 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (27432983) by changing a digit.

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, 57639 + ... + 58112.

It is an arithmetic number, because the mean of its divisors is an integer number (4630080).

Almost surely, 2^27432987 is an apocalyptic number.

27432987 is a deficient number, since it is larger than the sum of its proper divisors (9607653).

27432987 is a wasteful number, since it uses less digits than its factorization.

27432987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115833.

The product of its digits is 169344, while the sum is 42.

The square root of 27432987 is about 5237.6509047473. The cubic root of 27432987 is about 301.5951587510.

The spelling of 27432987 in words is "twenty-seven million, four hundred thirty-two thousand, nine hundred eighty-seven".