27428636 has 12 divisors (see below), whose sum is σ = 49021728. Its totient is φ = 13422432.

The previous prime is 27428617. The next prime is 27428657. The reversal of 27428636 is 63682472.

It is a self number, because there is not a number n which added to its sum of digits gives 27428636.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 72761 + ... + 73136.

It is an arithmetic number, because the mean of its divisors is an integer number (4085144).

Almost surely, 2^27428636 is an apocalyptic number.

It is an amenable number.

27428636 is a deficient number, since it is larger than the sum of its proper divisors (21593092).

27428636 is a wasteful number, since it uses less digits than its factorization.

27428636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145948 (or 145946 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 27428636 is about 5237.2355303156. The cubic root of 27428636 is about 301.5792131072.

The spelling of 27428636 in words is "twenty-seven million, four hundred twenty-eight thousand, six hundred thirty-six".