27668790 has 40 divisors (see below), whose sum is σ = 74400480. Its totient is φ = 7378128.

The previous prime is 27668779. The next prime is 27668801. The reversal of 27668790 is 9786672.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27668779) and next prime (27668801).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16270 + ... + 17889.

It is an arithmetic number, because the mean of its divisors is an integer number (1860012).

Almost surely, 2^27668790 is an apocalyptic number.

27668790 is an abundant number, since it is smaller than the sum of its proper divisors (46731690).

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

27668790 is a wasteful number, since it uses less digits than its factorization.

27668790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34178 (or 34169 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 27668790 is about 5260.1131166544. The cubic root of 27668790 is about 302.4568251110.

The spelling of 27668790 in words is "twenty-seven million, six hundred sixty-eight thousand, seven hundred ninety".