27707028 has 12 divisors (see below), whose sum is σ = 64649760. Its totient is φ = 9235672.

The previous prime is 27707023. The next prime is 27707039. The reversal of 27707028 is 82070772.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 27707028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27707023) 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, 1154448 + ... + 1154471.

It is an arithmetic number, because the mean of its divisors is an integer number (5387480).

Almost surely, 2^27707028 is an apocalyptic number.

It is an amenable number.

27707028 is an abundant number, since it is smaller than the sum of its proper divisors (36942732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27707028 is a wasteful number, since it uses less digits than its factorization.

27707028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308926 (or 2308924 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 27707028 is about 5263.7465744468. The cubic root of 27707028 is about 302.5960917773.

The spelling of 27707028 in words is "twenty-seven million, seven hundred seven thousand, twenty-eight".