26720064 has 168 divisors, whose sum is σ = 91724480. Its totient is φ = 7471872.

The previous prime is 26720063. The next prime is 26720081. The reversal of 26720064 is 46002762.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26720063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 568489 + ... + 568535.

Almost surely, 2^26720064 is an apocalyptic number.

26720064 is a gapful number since it is divisible by the number (24) 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 26720064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45862240).

26720064 is an abundant number, since it is smaller than the sum of its proper divisors (65004416).

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

26720064 is an equidigital number, since it uses as much as digits as its factorization.

26720064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 26720064 is about 5169.1453839102. The cubic root of 26720064 is about 298.9595960363.

The spelling of 26720064 in words is "twenty-six million, seven hundred twenty thousand, sixty-four".