27491028 has 24 divisors (see below), whose sum is σ = 64266720. Its totient is φ = 9146400.

The previous prime is 27491027. The next prime is 27491029. The reversal of 27491028 is 82019472.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27491027) and next prime (27491029).

It is a self number, because there is not a number n which added to its sum of digits gives 27491028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27491021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5578 + ... + 9278.

It is an arithmetic number, because the mean of its divisors is an integer number (2677780).

Almost surely, 2^27491028 is an apocalyptic number.

It is an amenable number.

27491028 is an abundant number, since it is smaller than the sum of its proper divisors (36775692).

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

27491028 is a wasteful number, since it uses less digits than its factorization.

27491028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327 (or 4325 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 27491028 is about 5243.1887244310. The cubic root of 27491028 is about 301.8077076537.

The spelling of 27491028 in words is "twenty-seven million, four hundred ninety-one thousand, twenty-eight".