27729372 has 24 divisors (see below), whose sum is σ = 70584192. Its totient is φ = 8402800.

The previous prime is 27729353. The next prime is 27729413. The reversal of 27729372 is 27392772.

It is a self number, because there is not a number n which added to its sum of digits gives 27729372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104904 + ... + 105167.

It is an arithmetic number, because the mean of its divisors is an integer number (2941008).

Almost surely, 2^27729372 is an apocalyptic number.

27729372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27729372 is an abundant number, since it is smaller than the sum of its proper divisors (42854820).

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

27729372 is a wasteful number, since it uses less digits than its factorization.

27729372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210089 (or 210087 counting only the distinct ones).

The product of its digits is 74088, while the sum is 39.

The square root of 27729372 is about 5265.8685893212. The cubic root of 27729372 is about 302.6774115829.

The spelling of 27729372 in words is "twenty-seven million, seven hundred twenty-nine thousand, three hundred seventy-two".