33894561 has 8 divisors (see below), whose sum is σ = 45295200. Its totient is φ = 22545152.

The previous prime is 33894559. The next prime is 33894569. The reversal of 33894561 is 16549833.

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

It is a cyclic number.

It is not a de Polignac number, because 33894561 - 2¹ = 33894559 is a prime.

It is a super-2 number, since 2×33894561² = 2297682530765442, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33894569) 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, 11235 + ... + 13928.

It is an arithmetic number, because the mean of its divisors is an integer number (5661900).

Almost surely, 2^33894561 is an apocalyptic number.

It is an amenable number.

33894561 is a deficient number, since it is larger than the sum of its proper divisors (11400639).

33894561 is a wasteful number, since it uses less digits than its factorization.

33894561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25615.

The product of its digits is 77760, while the sum is 39.

The square root of 33894561 is about 5821.9035546804. The cubic root of 33894561 is about 323.6259496019.

The spelling of 33894561 in words is "thirty-three million, eight hundred ninety-four thousand, five hundred sixty-one".