33198012 has 60 divisors (see below), whose sum is σ = 87952480. Its totient is φ = 10917504.

The previous prime is 33198007. The next prime is 33198017. The reversal of 33198012 is 21089133.

It is an interprime number because it is at equal distance from previous prime (33198007) and next prime (33198017).

It is a super-2 number, since 2×33198012² = 2204216001504288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33198017) 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 19 ways as a sum of consecutive naturals, for example, 24948 + ... + 26244.

Almost surely, 2^33198012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33198012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43976240).

33198012 is an abundant number, since it is smaller than the sum of its proper divisors (54754468).

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

33198012 is a wasteful number, since it uses less digits than its factorization.

33198012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 33198012 is about 5761.7716025542. The cubic root of 33198012 is about 321.3936998360.

The spelling of 33198012 in words is "thirty-three million, one hundred ninety-eight thousand, twelve".