26526780 has 144 divisors (see below), whose sum is σ = 94610880. Its totient is φ = 5889024.

The previous prime is 26526767. The next prime is 26526803. The reversal of 26526780 is 8762562.

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

It is a congruent 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 47 ways as a sum of consecutive naturals, for example, 46336 + ... + 46904.

It is an arithmetic number, because the mean of its divisors is an integer number (657020).

Almost surely, 2^26526780 is an apocalyptic number.

26526780 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 26526780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47305440).

26526780 is an abundant number, since it is smaller than the sum of its proper divisors (68084100).

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

26526780 is a wasteful number, since it uses less digits than its factorization.

26526780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 26526780 is about 5150.4155172180. The cubic root of 26526780 is about 298.2369929830.

The spelling of 26526780 in words is "twenty-six million, five hundred twenty-six thousand, seven hundred eighty".