27899448 has 128 divisors (see below), whose sum is σ = 80352000. Its totient is φ = 8017920.

The previous prime is 27899447. The next prime is 27899449. The reversal of 27899448 is 84499872.

It is an interprime number because it is at equal distance from previous prime (27899447) and next prime (27899449).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 27899448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27899441) 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 31 ways as a sum of consecutive naturals, for example, 457338 + ... + 457398.

It is an arithmetic number, because the mean of its divisors is an integer number (627750).

Almost surely, 2^27899448 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 27899448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40176000).

27899448 is an abundant number, since it is smaller than the sum of its proper divisors (52452552).

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

27899448 is a wasteful number, since it uses less digits than its factorization.

27899448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 161 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 27899448 is about 5281.9928057505. The cubic root of 27899448 is about 303.2949670377.

The spelling of 27899448 in words is "twenty-seven million, eight hundred ninety-nine thousand, four hundred forty-eight".