33489980 has 24 divisors (see below), whose sum is σ = 70767312. Its totient is φ = 13312512.

The previous prime is 33489979. The next prime is 33490003. The reversal of 33489980 is 8998433.

It is a super-2 number, since 2×33489980² = 2243157520800800, which contains 22 as substring.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1877 + ... + 8396.

It is an arithmetic number, because the mean of its divisors is an integer number (2948638).

Almost surely, 2^33489980 is an apocalyptic number.

It is an amenable number.

33489980 is an abundant number, since it is smaller than the sum of its proper divisors (37277332).

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

33489980 is a wasteful number, since it uses less digits than its factorization.

33489980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10445 (or 10443 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 33489980 is about 5787.0527904971. The cubic root of 33489980 is about 322.3331428582. Note that the first 3 decimals are identical.

The spelling of 33489980 in words is "thirty-three million, four hundred eighty-nine thousand, nine hundred eighty".