27121672 has 8 divisors (see below), whose sum is σ = 50853150. Its totient is φ = 13560832.

The previous prime is 27121663. The next prime is 27121687. The reversal of 27121672 is 27612172.

It can be written as a sum of positive squares in only one way, i.e., 23097636 + 4024036 = 4806^2 + 2006^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 27121672.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1695097 + ... + 1695112.

Almost surely, 2^27121672 is an apocalyptic number.

It is an amenable number.

27121672 is a deficient number, since it is larger than the sum of its proper divisors (23731478).

27121672 is a wasteful number, since it uses less digits than its factorization.

27121672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390215 (or 3390211 counting only the distinct ones).

The product of its digits is 2352, while the sum is 28.

The square root of 27121672 is about 5207.8471559753. The cubic root of 27121672 is about 300.4499618142.

The spelling of 27121672 in words is "twenty-seven million, one hundred twenty-one thousand, six hundred seventy-two".