27994690 has 8 divisors (see below), whose sum is σ = 50390460. Its totient is φ = 11197872.

The previous prime is 27994667. The next prime is 27994691. The reversal of 27994690 is 9649972.

It can be written as a sum of positive squares in 2 ways, for example, as 27994681 + 9 = 5291^2 + 3^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×27994690² = 1567405336392200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27994690.

It is not an unprimeable number, because it can be changed into a prime (27994691) by changing a digit.

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, 1399725 + ... + 1399744.

Almost surely, 2^27994690 is an apocalyptic number.

27994690 is a deficient number, since it is larger than the sum of its proper divisors (22395770).

27994690 is a wasteful number, since it uses less digits than its factorization.

27994690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799476.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 27994690 is about 5291.0008505008. Note that the first 3 decimals coincide. The cubic root of 27994690 is about 303.6397003937.

The spelling of 27994690 in words is "twenty-seven million, nine hundred ninety-four thousand, six hundred ninety".