133265890 has 32 divisors (see below), whose sum is σ = 257230080. Its totient is φ = 49530624.

The previous prime is 133265861. The next prime is 133265893. The reversal of 133265890 is 98562331.

133265890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (133265893) by changing a digit.

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, 8469 + ... + 18391.

It is an arithmetic number, because the mean of its divisors is an integer number (8038440).

Almost surely, 2^133265890 is an apocalyptic number.

133265890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133265890 is a deficient number, since it is larger than the sum of its proper divisors (123964190).

133265890 is a wasteful number, since it uses less digits than its factorization.

133265890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10026.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 133265890 is about 11544.0846323994. The cubic root of 133265890 is about 510.7868029640.

The spelling of 133265890 in words is "one hundred thirty-three million, two hundred sixty-five thousand, eight hundred ninety".