33420660 has 96 divisors (see below), whose sum is σ = 115191552. Its totient is φ = 7050240.

The previous prime is 33420643. The next prime is 33420683. The reversal of 33420660 is 6602433.

It is a super-2 number, since 2×33420660² = 2233881029671200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33420660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2400 + ... + 8520.

It is an arithmetic number, because the mean of its divisors is an integer number (1199912).

Almost surely, 2^33420660 is an apocalyptic number.

33420660 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 33420660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57595776).

33420660 is an abundant number, since it is smaller than the sum of its proper divisors (81770892).

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

33420660 is a wasteful number, since it uses less digits than its factorization.

33420660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153 (or 6151 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 33420660 is about 5781.0604563523. The cubic root of 33420660 is about 322.1105930316.

The spelling of 33420660 in words is "thirty-three million, four hundred twenty thousand, six hundred sixty".