26013681 has 12 divisors (see below), whose sum is σ = 38787840. Its totient is φ = 16782840.

The previous prime is 26013677. The next prime is 26013683. The reversal of 26013681 is 18631062.

It is not a de Polignac number, because 26013681 - 2² = 26013677 is a prime.

It is a super-2 number, since 2×26013681² = 1353423198339522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26013683) 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, 46341 + ... + 46898.

It is an arithmetic number, because the mean of its divisors is an integer number (3232320).

Almost surely, 2^26013681 is an apocalyptic number.

It is an amenable number.

26013681 is a deficient number, since it is larger than the sum of its proper divisors (12774159).

26013681 is a wasteful number, since it uses less digits than its factorization.

26013681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93276 (or 93273 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 26013681 is about 5100.3608695856. The cubic root of 26013681 is about 296.3015591509.

The spelling of 26013681 in words is "twenty-six million, thirteen thousand, six hundred eighty-one".