26404340 has 24 divisors (see below), whose sum is σ = 55595400. Its totient is φ = 10533888.

The previous prime is 26404333. The next prime is 26404351. The reversal of 26404340 is 4340462.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 414736 + 25989604 = 644^2 + 5098^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7136 + ... + 10184.

It is an arithmetic number, because the mean of its divisors is an integer number (2316475).

Almost surely, 2^26404340 is an apocalyptic number.

26404340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26404340 is an abundant number, since it is smaller than the sum of its proper divisors (29191060).

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

26404340 is a wasteful number, since it uses less digits than its factorization.

26404340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491 (or 3489 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 26404340 is about 5138.5153497873. The cubic root of 26404340 is about 297.7774264040. Note that the first 3 decimals are identical.

The spelling of 26404340 in words is "twenty-six million, four hundred four thousand, three hundred forty".