27772443 has 16 divisors (see below), whose sum is σ = 41228160. Its totient is φ = 18477288.

The previous prime is 27772417. The next prime is 27772463. The reversal of 27772443 is 34427772.

It is not a de Polignac number, because 27772443 - 2⁵ = 27772411 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 27772398 and 27772407.

It is not an unprimeable number, because it can be changed into a prime (27772403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20596 + ... + 21902.

It is an arithmetic number, because the mean of its divisors is an integer number (2576760).

Almost surely, 2^27772443 is an apocalyptic number.

27772443 is a deficient number, since it is larger than the sum of its proper divisors (13455717).

27772443 is a wasteful number, since it uses less digits than its factorization.

27772443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103 (or 2097 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 27772443 is about 5269.9566411879. The cubic root of 27772443 is about 302.8340430283.

The spelling of 27772443 in words is "twenty-seven million, seven hundred seventy-two thousand, four hundred forty-three".