33220406 has 16 divisors (see below), whose sum is σ = 51855360. Its totient is φ = 15944040.

The previous prime is 33220393. The next prime is 33220423. The reversal of 33220406 is 60402233.

It is a super-2 number, since 2×33220406² = 2207190749609672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 5765 + ... + 9983.

It is an arithmetic number, because the mean of its divisors is an integer number (3240960).

Almost surely, 2^33220406 is an apocalyptic number.

33220406 is a deficient number, since it is larger than the sum of its proper divisors (18634954).

33220406 is a wasteful number, since it uses less digits than its factorization.

33220406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 33220406 is about 5763.7146008455. The cubic root of 33220406 is about 321.4659498730.

Adding to 33220406 its reverse (60402233), we get a palindrome (93622639).

The spelling of 33220406 in words is "thirty-three million, two hundred twenty thousand, four hundred six".