27999552 has 112 divisors (see below), whose sum is σ = 86026752. Its totient is φ = 7872000.

The previous prime is 27999551. The next prime is 27999553. The reversal of 27999552 is 25599972.

It is an interprime number because it is at equal distance from previous prime (27999551) and next prime (27999553).

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27999551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111427 + ... + 111677.

It is an arithmetic number, because the mean of its divisors is an integer number (768096).

Almost surely, 2^27999552 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 27999552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43013376).

27999552 is an abundant number, since it is smaller than the sum of its proper divisors (58027200).

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

27999552 is a wasteful number, since it uses less digits than its factorization.

27999552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 346 counting only the distinct ones).

The product of its digits is 510300, while the sum is 48.

The square root of 27999552 is about 5291.4602899389. The cubic root of 27999552 is about 303.6572776648.

The spelling of 27999552 in words is "twenty-seven million, nine hundred ninety-nine thousand, five hundred fifty-two".