33390016 has 56 divisors (see below), whose sum is σ = 74029824. Its totient is φ = 14810880.

The previous prime is 33389969. The next prime is 33390029. The reversal of 33390016 is 61009333.

It is a super-2 number, since 2×33390016² = 2229786336960512, 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 7 ways as a sum of consecutive naturals, for example, 29721 + ... + 30823.

Almost surely, 2^33390016 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 33390016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37014912).

33390016 is an abundant number, since it is smaller than the sum of its proper divisors (40639808).

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

33390016 is a wasteful number, since it uses less digits than its factorization.

33390016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 33390016 is about 5778.4094697417. The cubic root of 33390016 is about 322.0121132745.

Adding to 33390016 its reverse (61009333), we get a palindrome (94399349).

The spelling of 33390016 in words is "thirty-three million, three hundred ninety thousand, sixteen".