27730726 has 4 divisors (see below), whose sum is σ = 41596092. Its totient is φ = 13865362.

The previous prime is 27730721. The next prime is 27730727. The reversal of 27730726 is 62703772.

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

It is a junction number, because it is equal to n+sod(n) for n = 27730691 and 27730700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27730721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6932680 + ... + 6932683.

It is an arithmetic number, because the mean of its divisors is an integer number (10399023).

Almost surely, 2^27730726 is an apocalyptic number.

27730726 is a deficient number, since it is larger than the sum of its proper divisors (13865366).

27730726 is a wasteful number, since it uses less digits than its factorization.

27730726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13865365.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 27730726 is about 5265.9971515374. The cubic root of 27730726 is about 302.6823379902.

The spelling of 27730726 in words is "twenty-seven million, seven hundred thirty thousand, seven hundred twenty-six".