26993988 has 36 divisors (see below), whose sum is σ = 77983360. Its totient is φ = 7712496.

The previous prime is 26993969. The next prime is 26994017. The reversal of 26993988 is 88939962.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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, 53308 + ... + 53811.

Almost surely, 2^26993988 is an apocalyptic number.

26993988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

26993988 is an abundant number, since it is smaller than the sum of its proper divisors (50989372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26993988 is a wasteful number, since it uses less digits than its factorization.

26993988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107136 (or 107131 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 26993988 is about 5195.5738855299. The cubic root of 26993988 is about 299.9777316804.

The spelling of 26993988 in words is "twenty-six million, nine hundred ninety-three thousand, nine hundred eighty-eight".