33040040 has 64 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 11808000.

The previous prime is 33040009. The next prime is 33040057. The reversal of 33040040 is 4004033.

It is a junction number, because it is equal to n+sod(n) for n = 33039997 and 33040024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26225 + ... + 27455.

It is an arithmetic number, because the mean of its divisors is an integer number (1288980).

Almost surely, 2^33040040 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 33040040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41247360).

33040040 is an abundant number, since it is smaller than the sum of its proper divisors (49454680).

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

33040040 is a wasteful number, since it uses less digits than its factorization.

33040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 33040040 is about 5748.0466247239. The cubic root of 33040040 is about 320.8831075116.

Adding to 33040040 its reverse (4004033), we get a palindrome (37044073).

The spelling of 33040040 in words is "thirty-three million, forty thousand, forty".