26880646 has 16 divisors (see below), whose sum is σ = 44244144. Its totient is φ = 12171744.

The previous prime is 26880641. The next prime is 26880653. The reversal of 26880646 is 64608862.

It is a junction number, because it is equal to n+sod(n) for n = 26880599 and 26880608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26880641) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8376 + ... + 11131.

It is an arithmetic number, because the mean of its divisors is an integer number (2765259).

Almost surely, 2^26880646 is an apocalyptic number.

26880646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

26880646 is a deficient number, since it is larger than the sum of its proper divisors (17363498).

26880646 is a wasteful number, since it uses less digits than its factorization.

26880646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19575.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 26880646 is about 5184.6548583295. The cubic root of 26880646 is about 299.5572951776.

The spelling of 26880646 in words is "twenty-six million, eight hundred eighty thousand, six hundred forty-six".