26380881 has 6 divisors (see below), whose sum is σ = 38105730. Its totient is φ = 17587248.

The previous prime is 26380859. The next prime is 26380883. The reversal of 26380881 is 18808362.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 370881 = 5100^2 + 609^2 .

It is not a de Polignac number, because 26380881 - 2¹⁴ = 26364497 is a prime.

It is a super-2 number, since 2×26380881² = 1391901764672322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26380883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1465596 + ... + 1465613.

It is an arithmetic number, because the mean of its divisors is an integer number (6350955).

Almost surely, 2^26380881 is an apocalyptic number.

It is an amenable number.

26380881 is a deficient number, since it is larger than the sum of its proper divisors (11724849).

26380881 is a wasteful number, since it uses less digits than its factorization.

26380881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931215 (or 2931212 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 26380881 is about 5136.2321793315. The cubic root of 26380881 is about 297.6892132486.

It can be divided in two parts, 26380 and 881, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 26380881 in words is "twenty-six million, three hundred eighty thousand, eight hundred eighty-one".