26565980 has 24 divisors (see below), whose sum is σ = 63758688. Its totient is φ = 9108288.

The previous prime is 26565953. The next prime is 26566013. The reversal of 26565980 is 8956562.

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, 94739 + ... + 95018.

It is an arithmetic number, because the mean of its divisors is an integer number (2656612).

Almost surely, 2^26565980 is an apocalyptic number.

26565980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26565980 is an abundant number, since it is smaller than the sum of its proper divisors (37192708).

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

26565980 is a wasteful number, since it uses less digits than its factorization.

26565980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189773 (or 189771 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 26565980 is about 5154.2196305551. The cubic root of 26565980 is about 298.3838274411.

The spelling of 26565980 in words is "twenty-six million, five hundred sixty-five thousand, nine hundred eighty".