33628861 has 8 divisors (see below), whose sum is σ = 38896704. Its totient is φ = 28476960.

The previous prime is 33628843. The next prime is 33628867. The reversal of 33628861 is 16882633.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33628861 is a prime.

It is a super-2 number, since 2×33628861² = 2261800584314642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33628861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33628867) 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, 28360 + ... + 29521.

It is an arithmetic number, because the mean of its divisors is an integer number (4862088).

Almost surely, 2^33628861 is an apocalyptic number.

It is an amenable number.

33628861 is a deficient number, since it is larger than the sum of its proper divisors (5267843).

33628861 is an equidigital number, since it uses as much as digits as its factorization.

33628861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57971.

The product of its digits is 41472, while the sum is 37.

The square root of 33628861 is about 5799.0396618751. The cubic root of 33628861 is about 322.7780939628.

The spelling of 33628861 in words is "thirty-three million, six hundred twenty-eight thousand, eight hundred sixty-one".