33159940 has 48 divisors (see below), whose sum is σ = 79974720. Its totient is φ = 11422080.

The previous prime is 33159937. The next prime is 33159953. The reversal of 33159940 is 4995133.

It is a junction number, because it is equal to n+sod(n) for n = 33159896 and 33159905.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214 + ... + 8146.

It is an arithmetic number, because the mean of its divisors is an integer number (1666140).

Almost surely, 2^33159940 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 33159940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39987360).

33159940 is an abundant number, since it is smaller than the sum of its proper divisors (46814780).

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

33159940 is a wasteful number, since it uses less digits than its factorization.

33159940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7972 (or 7970 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 33159940 is about 5758.4668098375. The cubic root of 33159940 is about 321.2707930643.

It can be divided in two parts, 33159 and 940, that multiplied together give a triangular number (31169460 = T₇₈₉₅).

The spelling of 33159940 in words is "thirty-three million, one hundred fifty-nine thousand, nine hundred forty".