26806940 has 24 divisors (see below), whose sum is σ = 58111872. Its totient is φ = 10376640.

The previous prime is 26806939. The next prime is 26806951. The reversal of 26806940 is 4960862.

It is a super-2 number, since 2×26806940² = 1437224064327200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26806940.

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 7 ways as a sum of consecutive naturals, for example, 20999 + ... + 22238.

It is an arithmetic number, because the mean of its divisors is an integer number (2421328).

Almost surely, 2^26806940 is an apocalyptic number.

26806940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26806940 is an abundant number, since it is smaller than the sum of its proper divisors (31304932).

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

26806940 is a wasteful number, since it uses less digits than its factorization.

26806940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43277 (or 43275 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 26806940 is about 5177.5418878074. The cubic root of 26806940 is about 299.2832519006.

The spelling of 26806940 in words is "twenty-six million, eight hundred six thousand, nine hundred forty".