27929955 has 16 divisors (see below), whose sum is σ = 45356544. Its totient is φ = 14673120.

The previous prime is 27929947. The next prime is 27929959. The reversal of 27929955 is 55992972.

It is not a de Polignac number, because 27929955 - 2³ = 27929947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27929959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12891 + ... + 14900.

It is an arithmetic number, because the mean of its divisors is an integer number (2834784).

Almost surely, 2^27929955 is an apocalyptic number.

27929955 is a deficient number, since it is larger than the sum of its proper divisors (17426589).

27929955 is a wasteful number, since it uses less digits than its factorization.

27929955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27866.

The product of its digits is 510300, while the sum is 48.

The square root of 27929955 is about 5284.8798472624. The cubic root of 27929955 is about 303.4054739928.

The spelling of 27929955 in words is "twenty-seven million, nine hundred twenty-nine thousand, nine hundred fifty-five".