33420023 has 16 divisors (see below), whose sum is σ = 41321280. Its totient is φ = 26320896.

The previous prime is 33420017. The next prime is 33420041. The reversal of 33420023 is 32002433.

It is not a de Polignac number, because 33420023 - 2¹⁰ = 33418999 is a prime.

It is a super-2 number, since 2×33420023² = 2233795874641058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33419983 and 33420010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33420083) 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, 22673 + ... + 24101.

It is an arithmetic number, because the mean of its divisors is an integer number (2582580).

Almost surely, 2^33420023 is an apocalyptic number.

33420023 is a deficient number, since it is larger than the sum of its proper divisors (7901257).

33420023 is a wasteful number, since it uses less digits than its factorization.

33420023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 33420023 is about 5781.0053623916. The cubic root of 33420023 is about 322.1085465355.

Adding to 33420023 its reverse (32002433), we get a palindrome (65422456).

The spelling of 33420023 in words is "thirty-three million, four hundred twenty thousand, twenty-three".