33532989 has 32 divisors (see below), whose sum is σ = 53114880. Its totient is φ = 18418752.

The previous prime is 33532973. The next prime is 33533021. The reversal of 33532989 is 98923533.

It is not a de Polignac number, because 33532989 - 2⁴ = 33532973 is a prime.

It is a super-2 number, since 2×33532989² = 2248922702548242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 33532989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33532969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79822 + ... + 80240.

It is an arithmetic number, because the mean of its divisors is an integer number (1659840).

Almost surely, 2^33532989 is an apocalyptic number.

It is an amenable number.

33532989 is a deficient number, since it is larger than the sum of its proper divisors (19581891).

33532989 is a wasteful number, since it uses less digits than its factorization.

33532989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569.

The product of its digits is 174960, while the sum is 42.

The square root of 33532989 is about 5790.7675657032. The cubic root of 33532989 is about 322.4710676527.

The spelling of 33532989 in words is "thirty-three million, five hundred thirty-two thousand, nine hundred eighty-nine".