33223240 has 32 divisors (see below), whose sum is σ = 75660480. Its totient is φ = 13127872.

The previous prime is 33223217. The next prime is 33223261. The reversal of 33223240 is 4232233.

It is a super-2 number, since 2×33223240² = 2207567352195200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684 + ... + 8323.

It is an arithmetic number, because the mean of its divisors is an integer number (2364390).

Almost surely, 2^33223240 is an apocalyptic number.

It is an amenable number.

33223240 is an abundant number, since it is smaller than the sum of its proper divisors (42437240).

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

33223240 is a wasteful number, since it uses less digits than its factorization.

33223240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101 (or 10097 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 33223240 is about 5763.9604440003. The cubic root of 33223240 is about 321.4750909272.

Adding to 33223240 its reverse (4232233), we get a palindrome (37455473).

The spelling of 33223240 in words is "thirty-three million, two hundred twenty-three thousand, two hundred forty".