27191928 has 16 divisors (see below), whose sum is σ = 67979880. Its totient is φ = 9063968.

The previous prime is 27191921. The next prime is 27191939. The reversal of 27191928 is 82919172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27191921) 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, 566475 + ... + 566522.

Almost surely, 2^27191928 is an apocalyptic number.

It is an amenable number.

27191928 is an abundant number, since it is smaller than the sum of its proper divisors (40787952).

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

27191928 is a wasteful number, since it uses less digits than its factorization.

27191928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133006 (or 1133002 counting only the distinct ones).

The product of its digits is 18144, while the sum is 39.

The square root of 27191928 is about 5214.5879990657. The cubic root of 27191928 is about 300.7091667320.

The spelling of 27191928 in words is "twenty-seven million, one hundred ninety-one thousand, nine hundred twenty-eight".