26995780 has 48 divisors (see below), whose sum is σ = 65270016. Its totient is φ = 9187200.

The previous prime is 26995777. The next prime is 26995807. The reversal of 26995780 is 8759962.

It is a self number, because there is not a number n which added to its sum of digits gives 26995780.

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, 20502 + ... + 21778.

It is an arithmetic number, because the mean of its divisors is an integer number (1359792).

Almost surely, 2^26995780 is an apocalyptic number.

26995780 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 26995780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32635008).

26995780 is an abundant number, since it is smaller than the sum of its proper divisors (38274236).

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

26995780 is a wasteful number, since it uses less digits than its factorization.

26995780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 26995780 is about 5195.7463371493. The cubic root of 26995780 is about 299.9843695560.

The spelling of 26995780 in words is "twenty-six million, nine hundred ninety-five thousand, seven hundred eighty".