26940880 has 20 divisors (see below), whose sum is σ = 62637732. Its totient is φ = 10776320.

The previous prime is 26940811. The next prime is 26940883. The reversal of 26940880 is 8804962.

It can be written as a sum of positive squares in 2 ways, for example, as 20830096 + 6110784 = 4564^2 + 2472^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×26940880² = 1451622030348800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26940883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168301 + ... + 168460.

Almost surely, 2^26940880 is an apocalyptic number.

26940880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26940880 is an abundant number, since it is smaller than the sum of its proper divisors (35696852).

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

26940880 is a wasteful number, since it uses less digits than its factorization.

26940880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336774 (or 336768 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 26940880 is about 5190.4604805354. The cubic root of 26940880 is about 299.7808770264.

The spelling of 26940880 in words is "twenty-six million, nine hundred forty thousand, eight hundred eighty".