133334890 has 16 divisors (see below), whose sum is σ = 258464808. Its totient is φ = 49231296.

The previous prime is 133334881. The next prime is 133334897. The reversal of 133334890 is 98433331.

It can be written as a sum of positive squares in 4 ways, for example, as 99380961 + 33953929 = 9969^2 + 5827^2 .

It is not an unprimeable number, because it can be changed into a prime (133334897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512697 + ... + 512956.

Almost surely, 2^133334890 is an apocalyptic number.

133334890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133334890 is a deficient number, since it is larger than the sum of its proper divisors (125129918).

133334890 is a wasteful number, since it uses less digits than its factorization.

133334890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025673.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 133334890 is about 11547.0727892397. The cubic root of 133334890 is about 510.8749430685.

The spelling of 133334890 in words is "one hundred thirty-three million, three hundred thirty-four thousand, eight hundred ninety".