33490212 has 24 divisors (see below), whose sum is σ = 89307456. Its totient is φ = 9568608.

The previous prime is 33490211. The next prime is 33490213. The reversal of 33490212 is 21209433.

It is an interprime number because it is at equal distance from previous prime (33490211) and next prime (33490213).

It is a super-2 number, since 2×33490212² = 2243188599609888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33490211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199263 + ... + 199430.

It is an arithmetic number, because the mean of its divisors is an integer number (3721144).

Almost surely, 2^33490212 is an apocalyptic number.

It is an amenable number.

33490212 is an abundant number, since it is smaller than the sum of its proper divisors (55817244).

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

33490212 is a wasteful number, since it uses less digits than its factorization.

33490212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398707 (or 398705 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 33490212 is about 5787.0728352078. The cubic root of 33490212 is about 322.3338871715. Note that the first 3 decimals are identical.

Adding to 33490212 its reverse (21209433), we get a palindrome (54699645).

The spelling of 33490212 in words is "thirty-three million, four hundred ninety thousand, two hundred twelve".