133355490 has 64 divisors (see below), whose sum is σ = 347811840. Its totient is φ = 32598720.

The previous prime is 133355489. The next prime is 133355507. The reversal of 133355490 is 94553331.

It is a super-4 number, since 4×133355490⁴ (a number of 34 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13897 + ... + 21443.

It is an arithmetic number, because the mean of its divisors is an integer number (5434560).

Almost surely, 2^133355490 is an apocalyptic number.

133355490 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 133355490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173905920).

133355490 is an abundant number, since it is smaller than the sum of its proper divisors (214456350).

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

133355490 is a wasteful number, since it uses less digits than its factorization.

133355490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7607.

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 133355490 is about 11547.9647557481. The cubic root of 133355490 is about 510.9012514661.

The spelling of 133355490 in words is "one hundred thirty-three million, three hundred fifty-five thousand, four hundred ninety".