26011980 has 36 divisors (see below), whose sum is σ = 78903552. Its totient is φ = 6936480.

The previous prime is 26011963. The next prime is 26011981. The reversal of 26011980 is 8911062.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (26011981) 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, 72076 + ... + 72435.

Almost surely, 2^26011980 is an apocalyptic number.

26011980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26011980 is an abundant number, since it is smaller than the sum of its proper divisors (52891572).

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

26011980 is a wasteful number, since it uses less digits than its factorization.

26011980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144526 (or 144521 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 26011980 is about 5100.1941139529. The cubic root of 26011980 is about 296.2951007552.

The spelling of 26011980 in words is "twenty-six million, eleven thousand, nine hundred eighty".