33440000 has 180 divisors, whose sum is σ = 95781840. Its totient is φ = 11520000.

The previous prime is 33439993. The next prime is 33440009. The reversal of 33440000 is 4433.

It is a super-2 number, since 2×33440000² = 2236467200000000, which contains 22 as substring.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (33440009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1759991 + ... + 1760009.

Almost surely, 2^33440000 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 33440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47890920).

33440000 is an abundant number, since it is smaller than the sum of its proper divisors (62341840).

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

33440000 is an equidigital number, since it uses as much as digits as its factorization.

33440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 33440000 is about 5782.7329179204. The cubic root of 33440000 is about 322.1727144619.

Adding to 33440000 its reverse (4433), we get a palindrome (33444433).

The spelling of 33440000 in words is "thirty-three million, four hundred forty thousand".