33132978 has 24 divisors (see below), whose sum is σ = 72463248. Its totient is φ = 10940472.

The previous prime is 33132977. The next prime is 33133027. The reversal of 33132978 is 87923133.

It is a happy number.

It is a super-2 number, since 2×33132978² = 2195588462296968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33132977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6676 + ... + 10527.

It is an arithmetic number, because the mean of its divisors is an integer number (3019302).

Almost surely, 2^33132978 is an apocalyptic number.

33132978 is an abundant number, since it is smaller than the sum of its proper divisors (39330270).

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

33132978 is a wasteful number, since it uses less digits than its factorization.

33132978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17318 (or 17315 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 33132978 is about 5756.1252592347. The cubic root of 33132978 is about 321.1836954814.

The spelling of 33132978 in words is "thirty-three million, one hundred thirty-two thousand, nine hundred seventy-eight".