27997370 has 16 divisors (see below), whose sum is σ = 50487840. Its totient is φ = 11178384.

The previous prime is 27997349. The next prime is 27997373. The reversal of 27997370 is 7379972.

It is not an unprimeable number, because it can be changed into a prime (27997373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3929 + ... + 8451.

It is an arithmetic number, because the mean of its divisors is an integer number (3155490).

Almost surely, 2^27997370 is an apocalyptic number.

27997370 is a deficient number, since it is larger than the sum of its proper divisors (22490470).

27997370 is a wasteful number, since it uses less digits than its factorization.

27997370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149.

The product of its (nonzero) digits is 166698, while the sum is 44.

The square root of 27997370 is about 5291.2541046523. The cubic root of 27997370 is about 303.6493894744.

The spelling of 27997370 in words is "twenty-seven million, nine hundred ninety-seven thousand, three hundred seventy".