133233020 has 24 divisors (see below), whose sum is σ = 291955104. Its totient is φ = 50975936.

The previous prime is 133233017. The next prime is 133233031. The reversal of 133233020 is 20332331.

It is a self number, because there is not a number n which added to its sum of digits gives 133233020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144359 + ... + 145278.

It is an arithmetic number, because the mean of its divisors is an integer number (12164796).

Almost surely, 2^133233020 is an apocalyptic number.

133233020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133233020 is an abundant number, since it is smaller than the sum of its proper divisors (158722084).

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

133233020 is a wasteful number, since it uses less digits than its factorization.

133233020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289669 (or 289667 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 133233020 is about 11542.6608717401. The cubic root of 133233020 is about 510.7448043631.

Adding to 133233020 its reverse (20332331), we get a palindrome (153565351).

The spelling of 133233020 in words is "one hundred thirty-three million, two hundred thirty-three thousand, twenty".