26880645 has 32 divisors (see below), whose sum is σ = 47412864. Its totient is φ = 12896000.

The previous prime is 26880641. The next prime is 26880653. The reversal of 26880645 is 54608862.

It is not a de Polignac number, because 26880645 - 2² = 26880641 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 15859 + ... + 17471.

It is an arithmetic number, because the mean of its divisors is an integer number (1481652).

Almost surely, 2^26880645 is an apocalyptic number.

It is an amenable number.

26880645 is a deficient number, since it is larger than the sum of its proper divisors (20532219).

26880645 is a wasteful number, since it uses less digits than its factorization.

26880645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 26880645 is about 5184.6547618911. The cubic root of 26880645 is about 299.5572914630.

The spelling of 26880645 in words is "twenty-six million, eight hundred eighty thousand, six hundred forty-five".