27906290 has 8 divisors (see below), whose sum is σ = 50231340. Its totient is φ = 11162512.

The previous prime is 27906287. The next prime is 27906301. The reversal of 27906290 is 9260972.

It can be written as a sum of positive squares in 2 ways, for example, as 27804529 + 101761 = 5273^2 + 319^2 .

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

It is a super-2 number, since 2×27906290² = 1557522043128200, 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 27906290.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395305 + ... + 1395324.

Almost surely, 2^27906290 is an apocalyptic number.

27906290 is a deficient number, since it is larger than the sum of its proper divisors (22325050).

27906290 is a wasteful number, since it uses less digits than its factorization.

27906290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790636.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 27906290 is about 5282.6404382657. The cubic root of 27906290 is about 303.3197581441.

The spelling of 27906290 in words is "twenty-seven million, nine hundred six thousand, two hundred ninety".