133333900 has 54 divisors (see below), whose sum is σ = 336585228. Its totient is φ = 45712800.

The previous prime is 133333859. The next prime is 133333901. The reversal of 133333900 is 9333331.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (133333901) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8706 + ... + 18505.

Almost surely, 2^133333900 is an apocalyptic number.

133333900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133333900 is an abundant number, since it is smaller than the sum of its proper divisors (203251328).

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

133333900 is a wasteful number, since it uses less digits than its factorization.

133333900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27239 (or 27225 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 25.

The square root of 133333900 is about 11547.0299211529. The cubic root of 133333900 is about 510.8736786647.

The spelling of 133333900 in words is "one hundred thirty-three million, three hundred thirty-three thousand, nine hundred".