133135620 has 48 divisors (see below), whose sum is σ = 382861248. Its totient is φ = 34542720.

The previous prime is 133135601. The next prime is 133135649. The reversal of 133135620 is 26531331.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27766 + ... + 32205.

It is an arithmetic number, because the mean of its divisors is an integer number (7976276).

Almost surely, 2^133135620 is an apocalyptic number.

133135620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133135620 is an abundant number, since it is smaller than the sum of its proper divisors (249725628).

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

133135620 is a wasteful number, since it uses less digits than its factorization.

133135620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60020 (or 60018 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 133135620 is about 11538.4409692124. The cubic root of 133135620 is about 510.6203140246.

Adding to 133135620 its reverse (26531331), we get a palindrome (159666951).

The spelling of 133135620 in words is "one hundred thirty-three million, one hundred thirty-five thousand, six hundred twenty".