26978422 has 16 divisors (see below), whose sum is σ = 42958512. Its totient is φ = 12663040.

The previous prime is 26978417. The next prime is 26978429. The reversal of 26978422 is 22487962.

It is a super-2 number, since 2×26978422² = 1455670507220168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26978429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16953 + ... + 18475.

It is an arithmetic number, because the mean of its divisors is an integer number (2684907).

Almost surely, 2^26978422 is an apocalyptic number.

26978422 is a deficient number, since it is larger than the sum of its proper divisors (15980090).

26978422 is a wasteful number, since it uses less digits than its factorization.

26978422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063.

The product of its digits is 96768, while the sum is 40.

The square root of 26978422 is about 5194.0756636768. The cubic root of 26978422 is about 299.9200601821.

The spelling of 26978422 in words is "twenty-six million, nine hundred seventy-eight thousand, four hundred twenty-two".