27722061 has 16 divisors (see below), whose sum is σ = 42856320. Its totient is φ = 17677440.

The previous prime is 27722047. The next prime is 27722069. The reversal of 27722061 is 16022772.

It is not a de Polignac number, because 27722061 - 2⁶ = 27721997 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27722069) 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 15 ways as a sum of consecutive naturals, for example, 21700 + ... + 22941.

It is an arithmetic number, because the mean of its divisors is an integer number (2678520).

Almost surely, 2^27722061 is an apocalyptic number.

It is an amenable number.

27722061 is a deficient number, since it is larger than the sum of its proper divisors (15134259).

27722061 is a wasteful number, since it uses less digits than its factorization.

27722061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44673 (or 44667 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 27722061 is about 5265.1743560874. The cubic root of 27722061 is about 302.6508083952.

The spelling of 27722061 in words is "twenty-seven million, seven hundred twenty-two thousand, sixty-one".