26390720 has 28 divisors (see below), whose sum is σ = 62843664. Its totient is φ = 10556160.

The previous prime is 26390717. The next prime is 26390743. The reversal of 26390720 is 2709362.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40916 + ... + 41555.

Almost surely, 2^26390720 is an apocalyptic number.

26390720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26390720 is an abundant number, since it is smaller than the sum of its proper divisors (36452944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26390720 is an equidigital number, since it uses as much as digits as its factorization.

26390720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82488 (or 82478 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 26390720 is about 5137.1898933172. The cubic root of 26390720 is about 297.7262173213.

The spelling of 26390720 in words is "twenty-six million, three hundred ninety thousand, seven hundred twenty".