33020340 has 48 divisors (see below), whose sum is σ = 92706432. Its totient is φ = 8781696.

The previous prime is 33020329. The next prime is 33020369. The reversal of 33020340 is 4302033.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 43242 + ... + 43998.

It is an arithmetic number, because the mean of its divisors is an integer number (1931384).

Almost surely, 2^33020340 is an apocalyptic number.

33020340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33020340 is an abundant number, since it is smaller than the sum of its proper divisors (59686092).

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

33020340 is a wasteful number, since it uses less digits than its factorization.

33020340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 33020340 is about 5746.3327435853. The cubic root of 33020340 is about 320.8193197155.

Adding to 33020340 its reverse (4302033), we get a palindrome (37322373).

The spelling of 33020340 in words is "thirty-three million, twenty thousand, three hundred forty".