26340340 has 36 divisors (see below), whose sum is σ = 59904684. Its totient is φ = 9724416.

The previous prime is 26340331. The next prime is 26340341. The reversal of 26340340 is 4304362.

It can be written as a sum of positive squares in 6 ways, for example, as 574564 + 25765776 = 758^2 + 5076^2 .

It is a super-2 number, since 2×26340340² = 1387627022631200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26340341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 517 + ... + 7276.

It is an arithmetic number, because the mean of its divisors is an integer number (1664019).

Almost surely, 2^26340340 is an apocalyptic number.

26340340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26340340 is an abundant number, since it is smaller than the sum of its proper divisors (33564344).

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

26340340 is a wasteful number, since it uses less digits than its factorization.

26340340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7828 (or 7813 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 26340340 is about 5132.2840919029. The cubic root of 26340340 is about 297.5366430867.

The spelling of 26340340 in words is "twenty-six million, three hundred forty thousand, three hundred forty".