26270820 has 36 divisors (see below), whose sum is σ = 79688700. Its totient is φ = 7005504.

The previous prime is 26270819. The next prime is 26270833. The reversal of 26270820 is 2807262.

It can be written as a sum of positive squares in 2 ways, for example, as 20738916 + 5531904 = 4554^2 + 2352^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 72795 + ... + 73154.

It is an arithmetic number, because the mean of its divisors is an integer number (2213575).

Almost surely, 2^26270820 is an apocalyptic number.

26270820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26270820 is an abundant number, since it is smaller than the sum of its proper divisors (53417880).

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

26270820 is a wasteful number, since it uses less digits than its factorization.

26270820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145964 (or 145959 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 26270820 is about 5125.5068042097. The cubic root of 26270820 is about 297.2746498614.

The spelling of 26270820 in words is "twenty-six million, two hundred seventy thousand, eight hundred twenty".