33990120 has 96 divisors (see below), whose sum is σ = 111196800. Its totient is φ = 9004416.

The previous prime is 33990109. The next prime is 33990137. The reversal of 33990120 is 2109933.

It is a super-2 number, since 2×33990120² = 2310656515228800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94501 + ... + 94859.

It is an arithmetic number, because the mean of its divisors is an integer number (1158300).

Almost surely, 2^33990120 is an apocalyptic number.

33990120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33990120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55598400).

33990120 is an abundant number, since it is smaller than the sum of its proper divisors (77206680).

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

33990120 is a wasteful number, since it uses less digits than its factorization.

33990120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 33990120 is about 5830.1046302789. The cubic root of 33990120 is about 323.9297973185.

The spelling of 33990120 in words is "thirty-three million, nine hundred ninety thousand, one hundred twenty".