26997968 has 10 divisors (see below), whose sum is σ = 52308594. Its totient is φ = 13498976.

The previous prime is 26997959. The next prime is 26997973. The reversal of 26997968 is 86979962.

It can be written as a sum of positive squares in only one way, i.e., 26091664 + 906304 = 5108^2 + 952^2 .

It is a super-2 number, since 2×26997968² = 1457780552258048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843671 + ... + 843702.

Almost surely, 2^26997968 is an apocalyptic number.

It is an amenable number.

26997968 is a deficient number, since it is larger than the sum of its proper divisors (25310626).

26997968 is a wasteful number, since it uses less digits than its factorization.

26997968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687381 (or 1687375 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 56.

The square root of 26997968 is about 5195.9568897365. The cubic root of 26997968 is about 299.9924738853.

The spelling of 26997968 in words is "twenty-six million, nine hundred ninety-seven thousand, nine hundred sixty-eight".