133805826 has 96 divisors (see below), whose sum is σ = 374025600. Its totient is φ = 33546240.

The previous prime is 133805813. The next prime is 133805839. The reversal of 133805826 is 628508331.

It is an interprime number because it is at equal distance from previous prime (133805813) and next prime (133805839).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38530 + ... + 41858.

It is an arithmetic number, because the mean of its divisors is an integer number (3896100).

Almost surely, 2^133805826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133805826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187012800).

133805826 is an abundant number, since it is smaller than the sum of its proper divisors (240219774).

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

133805826 is a wasteful number, since it uses less digits than its factorization.

133805826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384 (or 3381 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 133805826 is about 11567.4468228732. The cubic root of 133805826 is about 511.4757028158.

The spelling of 133805826 in words is "one hundred thirty-three million, eight hundred five thousand, eight hundred twenty-six".