26533980 has 120 divisors (see below), whose sum is σ = 90866160. Its totient is φ = 6428160.

The previous prime is 26533961. The next prime is 26533981. The reversal of 26533980 is 8933562.

26533980 is a `hidden beast` number, since 265 + 3 + 398 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26533981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17076 + ... + 18564.

It is an arithmetic number, because the mean of its divisors is an integer number (757218).

Almost surely, 2^26533980 is an apocalyptic number.

26533980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26533980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45433080).

26533980 is an abundant number, since it is smaller than the sum of its proper divisors (64332180).

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

26533980 is a wasteful number, since it uses less digits than its factorization.

26533980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 26533980 is about 5151.1144425260. The cubic root of 26533980 is about 298.2639734168.

The spelling of 26533980 in words is "twenty-six million, five hundred thirty-three thousand, nine hundred eighty".