27973629 has 12 divisors (see below), whose sum is σ = 40612000. Its totient is φ = 18554184.

The previous prime is 27973553. The next prime is 27973657. The reversal of 27973629 is 92637972.

It is a happy number.

It is not a de Polignac number, because 27973629 - 2²⁰ = 26925053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27974629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6019 + ... + 9600.

Almost surely, 2^27973629 is an apocalyptic number.

It is an amenable number.

27973629 is a deficient number, since it is larger than the sum of its proper divisors (12638371).

27973629 is a wasteful number, since it uses less digits than its factorization.

27973629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15824 (or 15821 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 27973629 is about 5289.0102098597. The cubic root of 27973629 is about 303.5635364249.

The spelling of 27973629 in words is "twenty-seven million, nine hundred seventy-three thousand, six hundred twenty-nine".