33040020 has 48 divisors (see below), whose sum is σ = 99630720. Its totient is φ = 8132736.

The previous prime is 33040009. The next prime is 33040057. The reversal of 33040020 is 2004033.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 33039978 and 33040005.

It is a congruent number.

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, 20400 + ... + 21959.

It is an arithmetic number, because the mean of its divisors is an integer number (2075640).

Almost surely, 2^33040020 is an apocalyptic number.

33040020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33040020 is an abundant number, since it is smaller than the sum of its proper divisors (66590700).

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

33040020 is a wasteful number, since it uses less digits than its factorization.

33040020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42384 (or 42382 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 33040020 is about 5748.0448850022. The cubic root of 33040020 is about 320.8830427653.

Adding to 33040020 its reverse (2004033), we get a palindrome (35044053).

The spelling of 33040020 in words is "thirty-three million, forty thousand, twenty".