27738151 has 4 divisors (see below), whose sum is σ = 31700752. Its totient is φ = 23775552.

The previous prime is 27738143. The next prime is 27738163. The reversal of 27738151 is 15183772.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27738151 - 2³ = 27738143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27738251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1981290 + ... + 1981303.

It is an arithmetic number, because the mean of its divisors is an integer number (7925188).

Almost surely, 2^27738151 is an apocalyptic number.

27738151 is a deficient number, since it is larger than the sum of its proper divisors (3962601).

27738151 is an equidigital number, since it uses as much as digits as its factorization.

27738151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962600.

The product of its digits is 11760, while the sum is 34.

The square root of 27738151 is about 5266.7020990369. The cubic root of 27738151 is about 302.7093503351.

It can be divided in two parts, 27738 and 151, that added together give a square (27889 = 167²).

The spelling of 27738151 in words is "twenty-seven million, seven hundred thirty-eight thousand, one hundred fifty-one".