27909772 has 12 divisors (see below), whose sum is σ = 53282376. Its totient is φ = 12686240.

The previous prime is 27909719. The next prime is 27909779. The reversal of 27909772 is 27790972.

It is not an unprimeable number, because it can be changed into a prime (27909779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317113 + ... + 317200.

It is an arithmetic number, because the mean of its divisors is an integer number (4440198).

Almost surely, 2^27909772 is an apocalyptic number.

27909772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27909772 is a deficient number, since it is larger than the sum of its proper divisors (25372604).

27909772 is a wasteful number, since it uses less digits than its factorization.

27909772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634328 (or 634326 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 27909772 is about 5282.9699980219. The cubic root of 27909772 is about 303.3323731671.

The spelling of 27909772 in words is "twenty-seven million, nine hundred nine thousand, seven hundred seventy-two".