33872222 has 4 divisors (see below), whose sum is σ = 50808336. Its totient is φ = 16936110.

The previous prime is 33872197. The next prime is 33872233. The reversal of 33872222 is 22227833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22227833 = 29 ⋅766477.

It is a super-2 number, since 2×33872222² = 2294654846434568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8468054 + ... + 8468057.

It is an arithmetic number, because the mean of its divisors is an integer number (12702084).

Almost surely, 2^33872222 is an apocalyptic number.

33872222 is a deficient number, since it is larger than the sum of its proper divisors (16936114).

33872222 is a wasteful number, since it uses less digits than its factorization.

33872222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16936113.

The product of its digits is 8064, while the sum is 29.

The square root of 33872222 is about 5819.9847078837. The cubic root of 33872222 is about 323.5548362363.

The spelling of 33872222 in words is "thirty-three million, eight hundred seventy-two thousand, two hundred twenty-two".