27997044 has 12 divisors (see below), whose sum is σ = 65326464. Its totient is φ = 9332344.

The previous prime is 27997037. The next prime is 27997069. The reversal of 27997044 is 44079972.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 27996987 and 27997005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166532 + ... + 1166555.

It is an arithmetic number, because the mean of its divisors is an integer number (5443872).

Almost surely, 2^27997044 is an apocalyptic number.

It is an amenable number.

27997044 is an abundant number, since it is smaller than the sum of its proper divisors (37329420).

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

27997044 is a wasteful number, since it uses less digits than its factorization.

27997044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333094 (or 2333092 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 27997044 is about 5291.2232990113. The cubic root of 27997044 is about 303.6482109103.

The spelling of 27997044 in words is "twenty-seven million, nine hundred ninety-seven thousand, forty-four".