33552220 has 48 divisors (see below), whose sum is σ = 80353728. Its totient is φ = 11658240.

The previous prime is 33552209. The next prime is 33552247. The reversal of 33552220 is 2225533.

It is a super-2 number, since 2×33552220² = 2251502933856800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33552191 and 33552200.

It is a congruent number.

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, 625 + ... + 8215.

It is an arithmetic number, because the mean of its divisors is an integer number (1674036).

Almost surely, 2^33552220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33552220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40176864).

33552220 is an abundant number, since it is smaller than the sum of its proper divisors (46801508).

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

33552220 is a wasteful number, since it uses less digits than its factorization.

33552220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7630 (or 7628 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 33552220 is about 5792.4278156918. The cubic root of 33552220 is about 322.5327010488.

Adding to 33552220 its reverse (2225533), we get a palindrome (35777753).

The spelling of 33552220 in words is "thirty-three million, five hundred fifty-two thousand, two hundred twenty".