33628539 has 8 divisors (see below), whose sum is σ = 51243520. Its totient is φ = 19216296.

The previous prime is 33628501. The next prime is 33628541. The reversal of 33628539 is 93582633.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33628539 - 2¹² = 33624443 is a prime.

It is a super-2 number, since 2×33628539² = 2261757270549042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33628497 and 33628506.

It is not an unprimeable number, because it can be changed into a prime (33628559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800659 + ... + 800700.

It is an arithmetic number, because the mean of its divisors is an integer number (6405440).

Almost surely, 2^33628539 is an apocalyptic number.

33628539 is a deficient number, since it is larger than the sum of its proper divisors (17614981).

33628539 is a wasteful number, since it uses less digits than its factorization.

33628539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601369.

The product of its digits is 116640, while the sum is 39.

The square root of 33628539 is about 5799.0118985910. The cubic root of 33628539 is about 322.7770637478. Note that the first 3 decimals are identical.

The spelling of 33628539 in words is "thirty-three million, six hundred twenty-eight thousand, five hundred thirty-nine".