33424012240 has 20 divisors (see below), whose sum is σ = 77710828644. Its totient is φ = 13369604864.

The previous prime is 33424012217. The next prime is 33424012243. The reversal of 33424012240 is 4221042433.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7446309264 + 25977702976 = 86292^2 + 161176^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×33424012240² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33424012243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208899997 + ... + 208900156.

Almost surely, 2^33424012240 is an apocalyptic number.

It is an amenable number.

33424012240 is an abundant number, since it is smaller than the sum of its proper divisors (44286816404).

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

33424012240 is a wasteful number, since it uses less digits than its factorization.

33424012240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417800166 (or 417800160 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 33424012240 its reverse (4221042433), we get a palindrome (37645054673).

The spelling of 33424012240 in words is "thirty-three billion, four hundred twenty-four million, twelve thousand, two hundred forty".