33220023 has 16 divisors (see below), whose sum is σ = 47900160. Its totient is φ = 20398976.

The previous prime is 33220013. The next prime is 33220049. The reversal of 33220023 is 32002233.

It is a cyclic number.

It is not a de Polignac number, because 33220023 - 2⁶ = 33219959 is a prime.

It is a super-2 number, since 2×33220023² = 2207139856241058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33219984 and 33220011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4533 + ... + 9326.

It is an arithmetic number, because the mean of its divisors is an integer number (2993760).

Almost surely, 2^33220023 is an apocalyptic number.

33220023 is a deficient number, since it is larger than the sum of its proper divisors (14680137).

33220023 is a wasteful number, since it uses less digits than its factorization.

33220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13926.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 33220023 is about 5763.6813756487. The cubic root of 33220023 is about 321.4647144684.

Adding to 33220023 its reverse (32002233), we get a palindrome (65222256).

The spelling of 33220023 in words is "thirty-three million, two hundred twenty thousand, twenty-three".