26133240 has 128 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 5850624.

The previous prime is 26133229. The next prime is 26133241. The reversal of 26133240 is 4233162.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26133241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44227 + ... + 44813.

It is an arithmetic number, because the mean of its divisors is an integer number (714420).

Almost surely, 2^26133240 is an apocalyptic number.

26133240 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 26133240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45722880).

26133240 is an abundant number, since it is smaller than the sum of its proper divisors (65312520).

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

26133240 is a wasteful number, since it uses less digits than its factorization.

26133240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 26133240 is about 5112.0680746641. The cubic root of 26133240 is about 296.7547999452.

The spelling of 26133240 in words is "twenty-six million, one hundred thirty-three thousand, two hundred forty".