26988973 has 4 divisors (see below), whose sum is σ = 29442528. Its totient is φ = 24535420.

The previous prime is 26988971. The next prime is 26988991. The reversal of 26988973 is 37988962.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26988973 - 2¹ = 26988971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26988973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26988971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1226761 + ... + 1226782.

It is an arithmetic number, because the mean of its divisors is an integer number (7360632).

Almost surely, 2^26988973 is an apocalyptic number.

It is an amenable number.

26988973 is a deficient number, since it is larger than the sum of its proper divisors (2453555).

26988973 is a wasteful number, since it uses less digits than its factorization.

26988973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453554.

The product of its digits is 1306368, while the sum is 52.

The square root of 26988973 is about 5195.0912407772. The cubic root of 26988973 is about 299.9591536981.

It can be divided in two parts, 269889 and 73, that added together give a palindrome (269962).

The spelling of 26988973 in words is "twenty-six million, nine hundred eighty-eight thousand, nine hundred seventy-three".