27993529 has 16 divisors (see below), whose sum is σ = 29836800. Its totient is φ = 26231040.

The previous prime is 27993523. The next prime is 27993541. The reversal of 27993529 is 92539972.

It is a cyclic number.

It is not a de Polignac number, because 27993529 - 2¹⁹ = 27469241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27993523) 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, 140572 + ... + 140770.

It is an arithmetic number, because the mean of its divisors is an integer number (1864800).

Almost surely, 2^27993529 is an apocalyptic number.

It is an amenable number.

27993529 is a deficient number, since it is larger than the sum of its proper divisors (1843271).

27993529 is a wasteful number, since it uses less digits than its factorization.

27993529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its digits is 306180, while the sum is 46.

The square root of 27993529 is about 5290.8911347712. The cubic root of 27993529 is about 303.6355028052.

It can be divided in two parts, 2799 and 3529, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 27993529 in words is "twenty-seven million, nine hundred ninety-three thousand, five hundred twenty-nine".