33139980 has 36 divisors (see below), whose sum is σ = 100525152. Its totient is φ = 8837280.

The previous prime is 33139973. The next prime is 33140017. The reversal of 33139980 is 8993133.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91876 + ... + 92235.

Almost surely, 2^33139980 is an apocalyptic number.

33139980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33139980 is an abundant number, since it is smaller than the sum of its proper divisors (67385172).

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

33139980 is a wasteful number, since it uses less digits than its factorization.

33139980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184126 (or 184121 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 33139980 is about 5756.7334487537. The cubic root of 33139980 is about 321.2063191630.

The spelling of 33139980 in words is "thirty-three million, one hundred thirty-nine thousand, nine hundred eighty".