133889652 has 96 divisors (see below), whose sum is σ = 381964800. Its totient is φ = 40300416.

The previous prime is 133889633. The next prime is 133889653. The reversal of 133889652 is 256988331.

It is a happy number.

It is a super-2 number, since 2×133889652² = 35852877825362208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133889598 and 133889607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133889653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64974 + ... + 67002.

It is an arithmetic number, because the mean of its divisors is an integer number (3978800).

Almost surely, 2^133889652 is an apocalyptic number.

133889652 is a gapful number since it is divisible by the number (12) 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 133889652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190982400).

133889652 is an abundant number, since it is smaller than the sum of its proper divisors (248075148).

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

133889652 is a wasteful number, since it uses less digits than its factorization.

133889652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102 (or 2094 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 133889652 is about 11571.0696134800. The cubic root of 133889652 is about 511.5824894267.

The spelling of 133889652 in words is "one hundred thirty-three million, eight hundred eighty-nine thousand, six hundred fifty-two".