133459890 has 32 divisors (see below), whose sum is σ = 320607936. Its totient is φ = 35555520.

The previous prime is 133459873. The next prime is 133459897. The reversal of 133459890 is 98954331.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133459897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58980 + ... + 61200.

It is an arithmetic number, because the mean of its divisors is an integer number (10018998).

Almost surely, 2^133459890 is an apocalyptic number.

133459890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133459890 is an abundant number, since it is smaller than the sum of its proper divisors (187148046).

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

133459890 is a wasteful number, since it uses less digits than its factorization.

133459890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 133459890 is about 11552.4841484418. The cubic root of 133459890 is about 511.0345397614.

The spelling of 133459890 in words is "one hundred thirty-three million, four hundred fifty-nine thousand, eight hundred ninety".