133223004 has 36 divisors (see below), whose sum is σ = 343927584. Its totient is φ = 43462272.

The previous prime is 133222967. The next prime is 133223009. The reversal of 133223004 is 400322331.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133223009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37677 + ... + 41060.

It is an arithmetic number, because the mean of its divisors is an integer number (9553544).

Almost surely, 2^133223004 is an apocalyptic number.

It is an amenable number.

133223004 is an abundant number, since it is smaller than the sum of its proper divisors (210704580).

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

133223004 is a wasteful number, since it uses less digits than its factorization.

133223004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78794 (or 78789 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 133223004 is about 11542.2269948221. The cubic root of 133223004 is about 510.7320053634.

Adding to 133223004 its reverse (400322331), we get a palindrome (533545335).

It can be divided in two parts, 1332 and 23004, that added together give a square (24336 = 156²).

The spelling of 133223004 in words is "one hundred thirty-three million, two hundred twenty-three thousand, four".