26730780 has 48 divisors (see below), whose sum is σ = 76446720. Its totient is φ = 6975808.

The previous prime is 26730751. The next prime is 26730791. The reversal of 26730780 is 8703762.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1920 + ... + 7559.

It is an arithmetic number, because the mean of its divisors is an integer number (1592640).

Almost surely, 2^26730780 is an apocalyptic number.

26730780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26730780 is an abundant number, since it is smaller than the sum of its proper divisors (49715940).

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

26730780 is a wasteful number, since it uses less digits than its factorization.

26730780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9538 (or 9536 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 26730780 is about 5170.1818149848. The cubic root of 26730780 is about 298.9995563056. Note that the first 3 decimals are identical.

The spelling of 26730780 in words is "twenty-six million, seven hundred thirty thousand, seven hundred eighty".