27994572 has 72 divisors (see below), whose sum is σ = 74483136. Its totient is φ = 9192528.

The previous prime is 27994559. The next prime is 27994583. The reversal of 27994572 is 27549972.

27994572 is a `hidden beast` number, since 2 + 79 + 9 + 4 + 572 = 666.

It is a super-2 number, since 2×27994572² = 1567392122926368, which contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 80503 + ... + 80849.

It is an arithmetic number, because the mean of its divisors is an integer number (1034488).

Almost surely, 2^27994572 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 27994572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37241568).

27994572 is an abundant number, since it is smaller than the sum of its proper divisors (46488564).

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

27994572 is a wasteful number, since it uses less digits than its factorization.

27994572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 435 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 27994572 is about 5290.9896994797. The cubic root of 27994572 is about 303.6392737707.

The spelling of 27994572 in words is "twenty-seven million, nine hundred ninety-four thousand, five hundred seventy-two".