26260640 has 48 divisors (see below), whose sum is σ = 70906752. Its totient is φ = 9003264.

The previous prime is 26260621. The next prime is 26260657. The reversal of 26260640 is 4606262.

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, 10604 + ... + 12843.

It is an arithmetic number, because the mean of its divisors is an integer number (1477224).

Almost surely, 2^26260640 is an apocalyptic number.

26260640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26260640 is an abundant number, since it is smaller than the sum of its proper divisors (44646112).

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

26260640 is a wasteful number, since it uses less digits than its factorization.

26260640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23469 (or 23461 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 26260640 is about 5124.5136354585. The cubic root of 26260640 is about 297.2362467090.

The spelling of 26260640 in words is "twenty-six million, two hundred sixty thousand, six hundred forty".