33220874 has 4 divisors (see below), whose sum is σ = 49831314. Its totient is φ = 16610436.

The previous prime is 33220853. The next prime is 33220879. The reversal of 33220874 is 47802233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47802233 = 19 ⋅2515907.

It can be written as a sum of positive squares in only one way, i.e., 23961025 + 9259849 = 4895^2 + 3043^2 .

It is a super-2 number, since 2×33220874² = 2207252938647752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33220879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8305217 + ... + 8305220.

Almost surely, 2^33220874 is an apocalyptic number.

33220874 is a deficient number, since it is larger than the sum of its proper divisors (16610440).

33220874 is a wasteful number, since it uses less digits than its factorization.

33220874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16610439.

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

The square root of 33220874 is about 5763.7551995205. The cubic root of 33220874 is about 321.4674594407.

The spelling of 33220874 in words is "thirty-three million, two hundred twenty thousand, eight hundred seventy-four".