26706780 has 144 divisors (see below), whose sum is σ = 88331040. Its totient is φ = 6697728.

The previous prime is 26706773. The next prime is 26706781. The reversal of 26706780 is 8760762.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26706781) 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 47 ways as a sum of consecutive naturals, for example, 194872 + ... + 195008.

It is an arithmetic number, because the mean of its divisors is an integer number (613410).

Almost surely, 2^26706780 is an apocalyptic number.

26706780 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 26706780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44165520).

26706780 is an abundant number, since it is smaller than the sum of its proper divisors (61624260).

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

26706780 is a wasteful number, since it uses less digits than its factorization.

26706780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 26706780 is about 5167.8602922293. The cubic root of 26706780 is about 298.9100447879.

The spelling of 26706780 in words is "twenty-six million, seven hundred six thousand, seven hundred eighty".