133259490 has 192 divisors, whose sum is σ = 435891456. Its totient is φ = 27495936.

The previous prime is 133259461. The next prime is 133259507. The reversal of 133259490 is 94952331.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 433917 + ... + 434223.

It is an arithmetic number, because the mean of its divisors is an integer number (2270268).

Almost surely, 2^133259490 is an apocalyptic number.

133259490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133259490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217945728).

133259490 is an abundant number, since it is smaller than the sum of its proper divisors (302631966).

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

133259490 is a wasteful number, since it uses less digits than its factorization.

133259490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 133259490 is about 11543.8074308263. The cubic root of 133259490 is about 510.7786261083.

The spelling of 133259490 in words is "one hundred thirty-three million, two hundred fifty-nine thousand, four hundred ninety".