27998589 has 8 divisors (see below), whose sum is σ = 37365760. Its totient is φ = 18648576.

The previous prime is 27998587. The next prime is 27998591. The reversal of 27998589 is 98589972.

It is an interprime number because it is at equal distance from previous prime (27998587) and next prime (27998591).

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

It is not a de Polignac number, because 27998589 - 2¹ = 27998587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27998587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 7485.

It is an arithmetic number, because the mean of its divisors is an integer number (4670720).

Almost surely, 2^27998589 is an apocalyptic number.

It is an amenable number.

27998589 is a deficient number, since it is larger than the sum of its proper divisors (9367171).

27998589 is a wasteful number, since it uses less digits than its factorization.

27998589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8579.

The product of its digits is 3265920, while the sum is 57.

The square root of 27998589 is about 5291.3692934816. The cubic root of 27998589 is about 303.6537963554.

The spelling of 27998589 in words is "twenty-seven million, nine hundred ninety-eight thousand, five hundred eighty-nine".