33284138 has 4 divisors (see below), whose sum is σ = 49926210. Its totient is φ = 16642068.

The previous prime is 33284129. The next prime is 33284149. The reversal of 33284138 is 83148233.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83148233 = 7 ⋅11878319.

It can be written as a sum of positive squares in only one way, i.e., 25030009 + 8254129 = 5003^2 + 2873^2 .

It is a super-2 number, since 2×33284138² = 2215667684806088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8321033 + ... + 8321036.

Almost surely, 2^33284138 is an apocalyptic number.

33284138 is a deficient number, since it is larger than the sum of its proper divisors (16642072).

33284138 is a wasteful number, since it uses less digits than its factorization.

33284138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16642071.

The product of its digits is 13824, while the sum is 32.

The square root of 33284138 is about 5769.2406779402. The cubic root of 33284138 is about 321.6713916756.

The spelling of 33284138 in words is "thirty-three million, two hundred eighty-four thousand, one hundred thirty-eight".