27898473 has 4 divisors (see below), whose sum is σ = 37197968. Its totient is φ = 18598980.

The previous prime is 27898469. The next prime is 27898487. The reversal of 27898473 is 37489872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27898473 - 2² = 27898469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27898433) by changing a digit.

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, 4649743 + ... + 4649748.

It is an arithmetic number, because the mean of its divisors is an integer number (9299492).

Almost surely, 2^27898473 is an apocalyptic number.

It is an amenable number.

27898473 is a deficient number, since it is larger than the sum of its proper divisors (9299495).

27898473 is an equidigital number, since it uses as much as digits as its factorization.

27898473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299494.

The product of its digits is 677376, while the sum is 48.

The square root of 27898473 is about 5281.9005102330. The cubic root of 27898473 is about 303.2914339207.

The spelling of 27898473 in words is "twenty-seven million, eight hundred ninety-eight thousand, four hundred seventy-three".