27728274 has 16 divisors (see below), whose sum is σ = 63379008. Its totient is φ = 7922352.

The previous prime is 27728231. The next prime is 27728287. The reversal of 27728274 is 47282772.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330057 + ... + 330140.

It is an arithmetic number, because the mean of its divisors is an integer number (3961188).

Almost surely, 2^27728274 is an apocalyptic number.

27728274 is an abundant number, since it is smaller than the sum of its proper divisors (35650734).

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

27728274 is a wasteful number, since it uses less digits than its factorization.

27728274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660209.

The product of its digits is 87808, while the sum is 39.

The square root of 27728274 is about 5265.7643319845. The cubic root of 27728274 is about 302.6734164908.

The spelling of 27728274 in words is "twenty-seven million, seven hundred twenty-eight thousand, two hundred seventy-four".