26764780 has 72 divisors (see below), whose sum is σ = 67568256. Its totient is φ = 8870400.

The previous prime is 26764757. The next prime is 26764789. The reversal of 26764780 is 8746762.

It is not an unprimeable number, because it can be changed into a prime (26764789) 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, 29940 + ... + 30820.

It is an arithmetic number, because the mean of its divisors is an integer number (938448).

Almost surely, 2^26764780 is an apocalyptic number.

26764780 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 26764780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33784128).

26764780 is an abundant number, since it is smaller than the sum of its proper divisors (40803476).

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

26764780 is a wasteful number, since it uses less digits than its factorization.

26764780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 26764780 is about 5173.4688556132. The cubic root of 26764780 is about 299.1262726201.

The spelling of 26764780 in words is "twenty-six million, seven hundred sixty-four thousand, seven hundred eighty".