33423616 has 36 divisors (see below), whose sum is σ = 67274172. Its totient is φ = 16572416.

The previous prime is 33423589. The next prime is 33423659. The reversal of 33423616 is 61632433.

It can be written as a sum of positive squares in 2 ways, for example, as 16777216 + 16646400 = 4096^2 + 4080^2 .

It is a super-2 number, since 2×33423616² = 2234276213030912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34596 + ... + 35548.

It is an arithmetic number, because the mean of its divisors is an integer number (1868727).

Almost surely, 2^33423616 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 33423616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33637086).

33423616 is an abundant number, since it is smaller than the sum of its proper divisors (33850556).

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

33423616 is an equidigital number, since it uses as much as digits as its factorization.

33423616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106 (or 1092 counting only the distinct ones).

The product of its digits is 7776, while the sum is 28.

The square root of 33423616 is about 5781.3161131355. The cubic root of 33423616 is about 322.1200894613.

The spelling of 33423616 in words is "thirty-three million, four hundred twenty-three thousand, six hundred sixteen".