26620720 has 60 divisors (see below), whose sum is σ = 72008784. Its totient is φ = 9125760.

The previous prime is 26620717. The next prime is 26620733. The reversal of 26620720 is 2702662.

It is a happy 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 11 ways as a sum of consecutive naturals, for example, 525 + ... + 7315.

Almost surely, 2^26620720 is an apocalyptic number.

26620720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26620720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36004392).

26620720 is an abundant number, since it is smaller than the sum of its proper divisors (45388064).

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

26620720 is a wasteful number, since it uses less digits than its factorization.

26620720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818 (or 6805 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 26620720 is about 5159.5271101139. The cubic root of 26620720 is about 298.5886297856.

The spelling of 26620720 in words is "twenty-six million, six hundred twenty thousand, seven hundred twenty".