26205980 has 24 divisors (see below), whose sum is σ = 55248480. Its totient is φ = 10441280.

The previous prime is 26205973. The next prime is 26206001. The reversal of 26205980 is 8950262.

It is a congruent number.

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, 2945 + ... + 7815.

It is an arithmetic number, because the mean of its divisors is an integer number (2302020).

Almost surely, 2^26205980 is an apocalyptic number.

26205980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26205980 is an abundant number, since it is smaller than the sum of its proper divisors (29042500).

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

26205980 is a wasteful number, since it uses less digits than its factorization.

26205980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149 (or 5147 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 26205980 is about 5119.1776683370. The cubic root of 26205980 is about 297.0298767875.

The spelling of 26205980 in words is "twenty-six million, two hundred five thousand, nine hundred eighty".