26978464 has 24 divisors (see below), whose sum is σ = 53846100. Its totient is φ = 13303296.

The previous prime is 26978459. The next prime is 26978489. The reversal of 26978464 is 46487962.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24088464 + 2890000 = 4908^2 + 1700^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3439 + ... + 8110.

Almost surely, 2^26978464 is an apocalyptic number.

It is an amenable number.

26978464 is a deficient number, since it is larger than the sum of its proper divisors (26867636).

26978464 is a wasteful number, since it uses less digits than its factorization.

26978464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11632 (or 11624 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 26978464 is about 5194.0797067431. The cubic root of 26978464 is about 299.9202158205.

The spelling of 26978464 in words is "twenty-six million, nine hundred seventy-eight thousand, four hundred sixty-four".