27803990 has 8 divisors (see below), whose sum is σ = 50047200. Its totient is φ = 11121592.

The previous prime is 27803977. The next prime is 27803999. The reversal of 27803990 is 9930872.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27803999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390190 + ... + 1390209.

It is an arithmetic number, because the mean of its divisors is an integer number (6255900).

Almost surely, 2^27803990 is an apocalyptic number.

27803990 is a deficient number, since it is larger than the sum of its proper divisors (22243210).

27803990 is a wasteful number, since it uses less digits than its factorization.

27803990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780406.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 27803990 is about 5272.9488903269. The cubic root of 27803990 is about 302.9486637278.

The spelling of 27803990 in words is "twenty-seven million, eight hundred three thousand, nine hundred ninety".