27800141 has 4 divisors (see below), whose sum is σ = 27882972. Its totient is φ = 27717312.

The previous prime is 27800137. The next prime is 27800153. The reversal of 27800141 is 14100872.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3258025 + 24542116 = 1805^2 + 4954^2 .

It is a cyclic number.

It is not a de Polignac number, because 27800141 - 2² = 27800137 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 (27800131) 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, 40910 + ... + 41583.

It is an arithmetic number, because the mean of its divisors is an integer number (6970743).

Almost surely, 2^27800141 is an apocalyptic number.

It is an amenable number.

27800141 is a deficient number, since it is larger than the sum of its proper divisors (82831).

27800141 is an equidigital number, since it uses as much as digits as its factorization.

27800141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82830.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 27800141 is about 5272.5839016558. The cubic root of 27800141 is about 302.9346836813.

The spelling of 27800141 in words is "twenty-seven million, eight hundred thousand, one hundred forty-one".