33220743 has 8 divisors (see below), whose sum is σ = 44329968. Its totient is φ = 22129344.

The previous prime is 33220741. The next prime is 33220751. The reversal of 33220743 is 34702233.

It is a happy number.

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

It is not a de Polignac number, because 33220743 - 2¹ = 33220741 is a prime.

It is a super-2 number, since 2×33220743² = 2207235530944098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771 + ... + 8187.

It is an arithmetic number, because the mean of its divisors is an integer number (5541246).

Almost surely, 2^33220743 is an apocalyptic number.

33220743 is a deficient number, since it is larger than the sum of its proper divisors (11109225).

33220743 is a wasteful number, since it uses less digits than its factorization.

33220743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8913.

The product of its (nonzero) digits is 3024, while the sum is 24.

The square root of 33220743 is about 5763.7438353903. The cubic root of 33220743 is about 321.4670368922.

Adding to 33220743 its reverse (34702233), we get a palindrome (67922976).

The spelling of 33220743 in words is "thirty-three million, two hundred twenty thousand, seven hundred forty-three".