33857980 has 24 divisors (see below), whose sum is σ = 76571712. Its totient is φ = 12501312.

The previous prime is 33857969. The next prime is 33858017. The reversal of 33857980 is 8975833.

It is a happy number.

It is a super-2 number, since 2×33857980² = 2292725619360800, which contains 22 as substring.

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, 64852 + ... + 65371.

It is an arithmetic number, because the mean of its divisors is an integer number (3190488).

Almost surely, 2^33857980 is an apocalyptic number.

It is an amenable number.

33857980 is an abundant number, since it is smaller than the sum of its proper divisors (42713732).

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

33857980 is a wasteful number, since it uses less digits than its factorization.

33857980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130245 (or 130243 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 33857980 is about 5818.7610365094. The cubic root of 33857980 is about 323.5094823180.

The spelling of 33857980 in words is "thirty-three million, eight hundred fifty-seven thousand, nine hundred eighty".