33253240 has 32 divisors (see below), whose sum is σ = 75569760. Its totient is φ = 13168000.

The previous prime is 33253237. The next prime is 33253243. The reversal of 33253240 is 4235233.

It is an interprime number because it is at equal distance from previous prime (33253237) and next prime (33253243).

It is a super-2 number, since 2×33253240² = 2211555940995200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33253243) 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 7 ways as a sum of consecutive naturals, for example, 76 + ... + 8155.

It is an arithmetic number, because the mean of its divisors is an integer number (2361555).

Almost surely, 2^33253240 is an apocalyptic number.

It is an amenable number.

33253240 is an abundant number, since it is smaller than the sum of its proper divisors (42316520).

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

33253240 is a wasteful number, since it uses less digits than its factorization.

33253240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8343 (or 8339 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 33253240 is about 5766.5622341218. The cubic root of 33253240 is about 321.5718239302.

Adding to 33253240 its reverse (4235233), we get a palindrome (37488473).

The spelling of 33253240 in words is "thirty-three million, two hundred fifty-three thousand, two hundred forty".