33025440 has 96 divisors (see below), whose sum is σ = 118903680. Its totient is φ = 7547904.

The previous prime is 33025417. The next prime is 33025453. The reversal of 33025440 is 4452033.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1555 + ... + 8274.

It is an arithmetic number, because the mean of its divisors is an integer number (1238580).

Almost surely, 2^33025440 is an apocalyptic number.

33025440 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 33025440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59451840).

33025440 is an abundant number, since it is smaller than the sum of its proper divisors (85878240).

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

33025440 is a wasteful number, since it uses less digits than its factorization.

33025440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9854 (or 9846 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 33025440 is about 5746.7764877364. The cubic root of 33025440 is about 320.8358357407.

Adding to 33025440 its reverse (4452033), we get a palindrome (37477473).

The spelling of 33025440 in words is "thirty-three million, twenty-five thousand, four hundred forty".