33020321240 has 32 divisors (see below), whose sum is σ = 74560145760. Its totient is φ = 13161120000.

The previous prime is 33020321239. The next prime is 33020321273. The reversal of 33020321240 is 4212302033.

It is a super-2 number, since 2×33020321240² (a number of 22 digits) 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 an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1457636 + ... + 1480115.

It is an arithmetic number, because the mean of its divisors is an integer number (2330004555).

Almost surely, 2^33020321240 is an apocalyptic number.

It is an amenable number.

33020321240 is an abundant number, since it is smaller than the sum of its proper divisors (41539824520).

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

33020321240 is a wasteful number, since it uses less digits than its factorization.

33020321240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938043 (or 2938039 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 33020321240 its reverse (4212302033), we get a palindrome (37232623273).

The spelling of 33020321240 in words is "thirty-three billion, twenty million, three hundred twenty-one thousand, two hundred forty".