133344436 has 12 divisors (see below), whose sum is σ = 241399620. Its totient is φ = 64373120.

The previous prime is 133344433. The next prime is 133344437. The reversal of 133344436 is 634443331.

It can be written as a sum of positive squares in 2 ways, for example, as 99121936 + 34222500 = 9956^2 + 5850^2 .

It is a super-2 number, since 2×133344436² = 35561477224316192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133344398 and 133344407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133344433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574645 + ... + 574876.

It is an arithmetic number, because the mean of its divisors is an integer number (20116635).

Almost surely, 2^133344436 is an apocalyptic number.

It is an amenable number.

133344436 is a deficient number, since it is larger than the sum of its proper divisors (108055184).

133344436 is a wasteful number, since it uses less digits than its factorization.

133344436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149554 (or 1149552 counting only the distinct ones).

The product of its digits is 31104, while the sum is 31.

The square root of 133344436 is about 11547.4861333539. The cubic root of 133344436 is about 510.8871346658.

Adding to 133344436 its reverse (634443331), we get a palindrome (767787767).

It can be divided in two parts, 133 and 344436, that added together give a square (344569 = 587²).

The spelling of 133344436 in words is "one hundred thirty-three million, three hundred forty-four thousand, four hundred thirty-six".