27897903 has 12 divisors (see below), whose sum is σ = 43960488. Its totient is φ = 16907760.

The previous prime is 27897887. The next prime is 27897907. The reversal of 27897903 is 30979872.

It is not a de Polignac number, because 27897903 - 2⁴ = 27897887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27897907) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 140800 + ... + 140997.

It is an arithmetic number, because the mean of its divisors is an integer number (3663374).

Almost surely, 2^27897903 is an apocalyptic number.

27897903 is a deficient number, since it is larger than the sum of its proper divisors (16062585).

27897903 is a wasteful number, since it uses less digits than its factorization.

27897903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281814 (or 281811 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 27897903 is about 5281.8465521066. The cubic root of 27897903 is about 303.2893683681.

The spelling of 27897903 in words is "twenty-seven million, eight hundred ninety-seven thousand, nine hundred three".