33928361 has 4 divisors (see below), whose sum is σ = 34755924. Its totient is φ = 33100800.

The previous prime is 33928337. The next prime is 33928397. The reversal of 33928361 is 16382933.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16382933 = 7 ⋅2340419.

It can be written as a sum of positive squares in 2 ways, for example, as 2343961 + 31584400 = 1531^2 + 5620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33928361 is a prime.

It is a super-2 number, since 2×33928361² = 2302267360292642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33928061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413720 + ... + 413801.

It is an arithmetic number, because the mean of its divisors is an integer number (8688981).

Almost surely, 2^33928361 is an apocalyptic number.

It is an amenable number.

33928361 is a deficient number, since it is larger than the sum of its proper divisors (827563).

33928361 is an equidigital number, since it uses as much as digits as its factorization.

33928361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827562.

The product of its digits is 23328, while the sum is 35.

The square root of 33928361 is about 5824.8056619942. The cubic root of 33928361 is about 323.7334882233.

The spelling of 33928361 in words is "thirty-three million, nine hundred twenty-eight thousand, three hundred sixty-one".