133649850 has 24 divisors (see below), whose sum is σ = 331452000. Its totient is φ = 35639920.

The previous prime is 133649839. The next prime is 133649851. The reversal of 133649850 is 58946331.

It is a junction number, because it is equal to n+sod(n) for n = 133649799 and 133649808.

It is not an unprimeable number, because it can be changed into a prime (133649851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445350 + ... + 445649.

It is an arithmetic number, because the mean of its divisors is an integer number (13810500).

Almost surely, 2^133649850 is an apocalyptic number.

133649850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133649850 is an abundant number, since it is smaller than the sum of its proper divisors (197802150).

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

133649850 is a wasteful number, since it uses less digits than its factorization.

133649850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891014 (or 891009 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 133649850 is about 11560.7028333056. The cubic root of 133649850 is about 511.2768849829.

The spelling of 133649850 in words is "one hundred thirty-three million, six hundred forty-nine thousand, eight hundred fifty".