27823157 has 4 divisors (see below), whose sum is σ = 28238496. Its totient is φ = 27407820.

The previous prime is 27823153. The next prime is 27823171. The reversal of 27823157 is 75132872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27823157 - 2² = 27823153 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 (27823153) 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, 207569 + ... + 207702.

It is an arithmetic number, because the mean of its divisors is an integer number (7059624).

Almost surely, 2^27823157 is an apocalyptic number.

It is an amenable number.

27823157 is a deficient number, since it is larger than the sum of its proper divisors (415339).

27823157 is an equidigital number, since it uses as much as digits as its factorization.

27823157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415338.

The product of its digits is 23520, while the sum is 35.

The square root of 27823157 is about 5274.7660611633. The cubic root of 27823157 is about 303.0182614517.

The spelling of 27823157 in words is "twenty-seven million, eight hundred twenty-three thousand, one hundred fifty-seven".