33898812 has 48 divisors (see below), whose sum is σ = 83879040. Its totient is φ = 10625472.

The previous prime is 33898811. The next prime is 33898817. The reversal of 33898812 is 21889833.

It is a super-2 number, since 2×33898812² = 2298258910022688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33898811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35323 + ... + 36269.

It is an arithmetic number, because the mean of its divisors is an integer number (1747480).

Almost surely, 2^33898812 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 33898812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41939520).

33898812 is an abundant number, since it is smaller than the sum of its proper divisors (49980228).

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

33898812 is a wasteful number, since it uses less digits than its factorization.

33898812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 1128 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 33898812 is about 5822.2686300101. The cubic root of 33898812 is about 323.6394785808.

The spelling of 33898812 in words is "thirty-three million, eight hundred ninety-eight thousand, eight hundred twelve".