33242040 has 96 divisors (see below), whose sum is σ = 116363520. Its totient is φ = 8181504.

The previous prime is 33242009. The next prime is 33242047. The reversal of 33242040 is 4024233.

It is a super-2 number, since 2×33242040² = 2210066446723200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33242047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1129 + ... + 8231.

It is an arithmetic number, because the mean of its divisors is an integer number (1212120).

Almost surely, 2^33242040 is an apocalyptic number.

33242040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33242040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58181760).

33242040 is an abundant number, since it is smaller than the sum of its proper divisors (83121480).

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

33242040 is a wasteful number, since it uses less digits than its factorization.

33242040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7133 (or 7126 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 33242040 is about 5765.5910364853. The cubic root of 33242040 is about 321.5357170841.

Adding to 33242040 its reverse (4024233), we get a palindrome (37266273).

The spelling of 33242040 in words is "thirty-three million, two hundred forty-two thousand, forty".