33023220 has 48 divisors (see below), whose sum is σ = 92752128. Its totient is φ = 8778880.

The previous prime is 33023213. The next prime is 33023227. The reversal of 33023220 is 2232033.

It is an interprime number because it is at equal distance from previous prime (33023213) and next prime (33023227).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 33023220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33023227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25222 + ... + 26498.

It is an arithmetic number, because the mean of its divisors is an integer number (1932336).

Almost surely, 2^33023220 is an apocalyptic number.

33023220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33023220 is an abundant number, since it is smaller than the sum of its proper divisors (59728908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33023220 is a wasteful number, since it uses less digits than its factorization.

33023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720 (or 1718 counting only the distinct ones).

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

The square root of 33023220 is about 5746.5833327291. The cubic root of 33023220 is about 320.8286466211.

Adding to 33023220 its reverse (2232033), we get a palindrome (35255253).

The spelling of 33023220 in words is "thirty-three million, twenty-three thousand, two hundred twenty".