133466220 has 36 divisors (see below), whose sum is σ = 404848080. Its totient is φ = 35590944.

The previous prime is 133466219. The next prime is 133466227. The reversal of 133466220 is 22664331.

133466220 is a `hidden beast` number, since 1 + 3 + 34 + 6 + 622 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (133466227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370560 + ... + 370919.

It is an arithmetic number, because the mean of its divisors is an integer number (11245780).

Almost surely, 2^133466220 is an apocalyptic number.

133466220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133466220 is an abundant number, since it is smaller than the sum of its proper divisors (271381860).

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

133466220 is a wasteful number, since it uses less digits than its factorization.

133466220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741494 (or 741489 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 133466220 is about 11552.7581122432. The cubic root of 133466220 is about 511.0426190864.

The spelling of 133466220 in words is "one hundred thirty-three million, four hundred sixty-six thousand, two hundred twenty".