33220394 has 8 divisors (see below), whose sum is σ = 49930020. Its totient is φ = 16577056.

The previous prime is 33220393. The next prime is 33220423. The reversal of 33220394 is 49302233.

It can be written as a sum of positive squares in 2 ways, for example, as 30858025 + 2362369 = 5555^2 + 1537^2 .

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

It is a super-2 number, since 2×33220394² = 2207189155030472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33220391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15299 + ... + 17334.

Almost surely, 2^33220394 is an apocalyptic number.

33220394 is a deficient number, since it is larger than the sum of its proper divisors (16709626).

33220394 is a wasteful number, since it uses less digits than its factorization.

33220394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33144.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 33220394 is about 5763.7135598501. The cubic root of 33220394 is about 321.4659111660.

The spelling of 33220394 in words is "thirty-three million, two hundred twenty thousand, three hundred ninety-four".