33097820 has 48 divisors (see below), whose sum is σ = 80801280. Its totient is φ = 11152704.

The previous prime is 33097789. The next prime is 33097847. The reversal of 33097820 is 2879033.

It is a congruent number.

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, 6257 + ... + 10263.

It is an arithmetic number, because the mean of its divisors is an integer number (1683360).

Almost surely, 2^33097820 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 33097820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40400640).

33097820 is an abundant number, since it is smaller than the sum of its proper divisors (47703460).

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

33097820 is a wasteful number, since it uses less digits than its factorization.

33097820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082 (or 4080 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 33097820 is about 5753.0704845326. The cubic root of 33097820 is about 321.0700506728.

The spelling of 33097820 in words is "thirty-three million, ninety-seven thousand, eight hundred twenty".