26840340 has 36 divisors (see below), whose sum is σ = 81416244. Its totient is φ = 7157376.

The previous prime is 26840323. The next prime is 26840351. The reversal of 26840340 is 4304862.

It can be written as a sum of positive squares in 2 ways, for example, as 13793796 + 13046544 = 3714^2 + 3612^2 .

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

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 11 ways as a sum of consecutive naturals, for example, 74377 + ... + 74736.

Almost surely, 2^26840340 is an apocalyptic number.

26840340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26840340 is an abundant number, since it is smaller than the sum of its proper divisors (54575904).

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

26840340 is a wasteful number, since it uses less digits than its factorization.

26840340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149128 (or 149123 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 26840340 is about 5180.7663525776. The cubic root of 26840340 is about 299.4074972386.

The spelling of 26840340 in words is "twenty-six million, eight hundred forty thousand, three hundred forty".