26906978 has 32 divisors (see below), whose sum is σ = 47913600. Its totient is φ = 11324880.

The previous prime is 26906963. The next prime is 26906981. The reversal of 26906978 is 87960962.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 41525 + ... + 42167.

It is an arithmetic number, because the mean of its divisors is an integer number (1497300).

Almost surely, 2^26906978 is an apocalyptic number.

26906978 is a deficient number, since it is larger than the sum of its proper divisors (21006622).

26906978 is an equidigital number, since it uses as much as digits as its factorization.

26906978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 26906978 is about 5187.1936536050. The cubic root of 26906978 is about 299.6550776546.

The spelling of 26906978 in words is "twenty-six million, nine hundred six thousand, nine hundred seventy-eight".