33438861 has 12 divisors (see below), whose sum is σ = 49606492. Its totient is φ = 21689856.

The previous prime is 33438859. The next prime is 33438869. The reversal of 33438861 is 16883433.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15163236 + 18275625 = 3894^2 + 4275^2 .

It is not a de Polignac number, because 33438861 - 2¹ = 33438859 is a prime.

It is a super-2 number, since 2×33438861² = 2236314849954642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33438869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49876 + ... + 50541.

Almost surely, 2^33438861 is an apocalyptic number.

It is an amenable number.

33438861 is a deficient number, since it is larger than the sum of its proper divisors (16167631).

33438861 is a wasteful number, since it uses less digits than its factorization.

33438861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100460 (or 100457 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 33438861 is about 5782.6344342350. The cubic root of 33438861 is about 322.1690565782.

The spelling of 33438861 in words is "thirty-three million, four hundred thirty-eight thousand, eight hundred sixty-one".