33025920 has 128 divisors (see below), whose sum is σ = 106928640. Its totient is φ = 8669184.

The previous prime is 33025897. The next prime is 33025921. The reversal of 33025920 is 2952033.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×33025920² = 2181422783692800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33025921) 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, 197677 + ... + 197843.

It is an arithmetic number, because the mean of its divisors is an integer number (835380).

Almost surely, 2^33025920 is an apocalyptic number.

33025920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33025920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53464320).

33025920 is an abundant number, since it is smaller than the sum of its proper divisors (73902720).

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

33025920 is a wasteful number, since it uses less digits than its factorization.

33025920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 33025920 is about 5746.8182501276. The cubic root of 33025920 is about 320.8373901026.

Adding to 33025920 its reverse (2952033), we get a palindrome (35977953).

The spelling of 33025920 in words is "thirty-three million, twenty-five thousand, nine hundred twenty".