33334040 has 64 divisors (see below), whose sum is σ = 78140160. Its totient is φ = 12787200.

The previous prime is 33334039. The next prime is 33334043. The reversal of 33334040 is 4043333.

It is a happy number.

It is a super-2 number, since 2×33334040² = 2222316445443200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33334043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149369 + ... + 149591.

It is an arithmetic number, because the mean of its divisors is an integer number (1220940).

Almost surely, 2^33334040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33334040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39070080).

33334040 is an abundant number, since it is smaller than the sum of its proper divisors (44806120).

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

33334040 is a wasteful number, since it uses less digits than its factorization.

33334040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 20.

The square root of 33334040 is about 5773.5638907004. The cubic root of 33334040 is about 321.8320691164.

Adding to 33334040 its reverse (4043333), we get a palindrome (37377373).

The spelling of 33334040 in words is "thirty-three million, three hundred thirty-four thousand, forty".