26161880 has 16 divisors (see below), whose sum is σ = 58864320. Its totient is φ = 10464736.

The previous prime is 26161871. The next prime is 26161907. The reversal of 26161880 is 8816162.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326984 + ... + 327063.

It is an arithmetic number, because the mean of its divisors is an integer number (3679020).

Almost surely, 2^26161880 is an apocalyptic number.

26161880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26161880 is an abundant number, since it is smaller than the sum of its proper divisors (32702440).

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

26161880 is a wasteful number, since it uses less digits than its factorization.

26161880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654058 (or 654054 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 26161880 is about 5114.8685222594. The cubic root of 26161880 is about 296.8631670999.

The spelling of 26161880 in words is "twenty-six million, one hundred sixty-one thousand, eight hundred eighty".