33050640 has 160 divisors (see below), whose sum is σ = 118849536. Its totient is φ = 7441920.

The previous prime is 33050629. The next prime is 33050651. The reversal of 33050640 is 4605033.

It is an interprime number because it is at equal distance from previous prime (33050629) and next prime (33050651).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172945 + ... + 173135.

Almost surely, 2^33050640 is an apocalyptic number.

33050640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33050640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59424768).

33050640 is an abundant number, since it is smaller than the sum of its proper divisors (85798896).

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

33050640 is a wasteful number, since it uses less digits than its factorization.

33050640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 33050640 is about 5748.9686031496. The cubic root of 33050640 is about 320.9174193875.

Adding to 33050640 its reverse (4605033), we get a palindrome (37655673).

The spelling of 33050640 in words is "thirty-three million, fifty thousand, six hundred forty".