27768772 has 12 divisors (see below), whose sum is σ = 49097020. Its totient is φ = 13741056.

The previous prime is 27768721. The next prime is 27768781. The reversal of 27768772 is 27786772.

It can be written as a sum of positive squares in 2 ways, for example, as 17438976 + 10329796 = 4176^2 + 3214^2 .

It is a super-2 number, since 2×27768772² = 1542209396775968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35397 + ... + 36172.

Almost surely, 2^27768772 is an apocalyptic number.

It is an amenable number.

27768772 is a deficient number, since it is larger than the sum of its proper divisors (21328248).

27768772 is a wasteful number, since it uses less digits than its factorization.

27768772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71670 (or 71668 counting only the distinct ones).

The product of its digits is 460992, while the sum is 46.

The square root of 27768772 is about 5269.6083345919. The cubic root of 27768772 is about 302.8206994325.

The spelling of 27768772 in words is "twenty-seven million, seven hundred sixty-eight thousand, seven hundred seventy-two".