33090812 has 6 divisors (see below), whose sum is σ = 57908928. Its totient is φ = 16545404.

The previous prime is 33090803. The next prime is 33090821. The reversal of 33090812 is 21809033.

It is an interprime number because it is at equal distance from previous prime (33090803) and next prime (33090821).

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 as a sum of consecutive naturals, namely, 4136348 + ... + 4136355.

It is an arithmetic number, because the mean of its divisors is an integer number (9651488).

Almost surely, 2^33090812 is an apocalyptic number.

It is an amenable number.

33090812 is a deficient number, since it is larger than the sum of its proper divisors (24818116).

33090812 is a wasteful number, since it uses less digits than its factorization.

33090812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272707 (or 8272705 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 33090812 is about 5752.4613862242. The cubic root of 33090812 is about 321.0473883772.

Adding to 33090812 its reverse (21809033), we get a palindrome (54899845).

The spelling of 33090812 in words is "thirty-three million, ninety thousand, eight hundred twelve".