27897146 has 4 divisors (see below), whose sum is σ = 41845722. Its totient is φ = 13948572.

The previous prime is 27897143. The next prime is 27897151. The reversal of 27897146 is 64179872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21058921 + 6838225 = 4589^2 + 2615^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27897097 and 27897106.

It is not an unprimeable number, because it can be changed into a prime (27897143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6974285 + ... + 6974288.

Almost surely, 2^27897146 is an apocalyptic number.

27897146 is a deficient number, since it is larger than the sum of its proper divisors (13948576).

27897146 is a wasteful number, since it uses less digits than its factorization.

27897146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13948575.

The product of its digits is 169344, while the sum is 44.

The square root of 27897146 is about 5281.7748910759. The cubic root of 27897146 is about 303.2866251257.

The spelling of 27897146 in words is "twenty-seven million, eight hundred ninety-seven thousand, one hundred forty-six".