26873021 has 8 divisors (see below), whose sum is σ = 31339200. Its totient is φ = 23033724.

The previous prime is 26872997. The next prime is 26873023. The reversal of 26873021 is 12037862.

It is a happy number.

It is not a de Polignac number, because 26873021 - 2²² = 22678717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26873023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38831 + ... + 39516.

It is an arithmetic number, because the mean of its divisors is an integer number (3917400).

Almost surely, 2^26873021 is an apocalyptic number.

It is an amenable number.

26873021 is a deficient number, since it is larger than the sum of its proper divisors (4466179).

26873021 is an frugal number, since it uses more digits than its factorization.

26873021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78368 (or 78354 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 26873021 is about 5183.9194631090. The cubic root of 26873021 is about 299.5289682247.

The spelling of 26873021 in words is "twenty-six million, eight hundred seventy-three thousand, twenty-one".