26993906 has 4 divisors (see below), whose sum is σ = 40490862. Its totient is φ = 13496952.

The previous prime is 26993899. The next prime is 26993921. The reversal of 26993906 is 60939962.

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., 26368225 + 625681 = 5135^2 + 791^2 .

It is a super-2 number, since 2×26993906² = 1457341922273672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6748475 + ... + 6748478.

Almost surely, 2^26993906 is an apocalyptic number.

26993906 is a deficient number, since it is larger than the sum of its proper divisors (13496956).

26993906 is a wasteful number, since it uses less digits than its factorization.

26993906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13496955.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 26993906 is about 5195.5659941916. The cubic root of 26993906 is about 299.9774279313.

The spelling of 26993906 in words is "twenty-six million, nine hundred ninety-three thousand, nine hundred six".