26159980 has 48 divisors (see below), whose sum is σ = 68495616. Its totient is φ = 8153280.

The previous prime is 26159921. The next prime is 26160011. The reversal of 26159980 is 8995162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6954 + ... + 10033.

It is an arithmetic number, because the mean of its divisors is an integer number (1426992).

Almost surely, 2^26159980 is an apocalyptic number.

26159980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26159980 is an abundant number, since it is smaller than the sum of its proper divisors (42335636).

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

26159980 is a wasteful number, since it uses less digits than its factorization.

26159980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17014 (or 17012 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 26159980 is about 5114.6827858627. The cubic root of 26159980 is about 296.8559803882.

The spelling of 26159980 in words is "twenty-six million, one hundred fifty-nine thousand, nine hundred eighty".