33213210 has 16 divisors (see below), whose sum is σ = 79711776. Its totient is φ = 8856848.

The previous prime is 33213203. The next prime is 33213211. The reversal of 33213210 is 1231233.

It is a super-2 number, since 2×33213210² = 2206234637008200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 33213210.

It is not an unprimeable number, because it can be changed into a prime (33213211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553524 + ... + 553583.

It is an arithmetic number, because the mean of its divisors is an integer number (4981986).

Almost surely, 2^33213210 is an apocalyptic number.

33213210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33213210 is an abundant number, since it is smaller than the sum of its proper divisors (46498566).

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

33213210 is a wasteful number, since it uses less digits than its factorization.

33213210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107117.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 33213210 is about 5763.0903168352. The cubic root of 33213210 is about 321.4427368713.

Adding to 33213210 its reverse (1231233), we get a palindrome (34444443).

The spelling of 33213210 in words is "thirty-three million, two hundred thirteen thousand, two hundred ten".