33889352440 has 128 divisors (see below), whose sum is σ = 84306225600. Its totient is φ = 12202516480.

The previous prime is 33889352437. The next prime is 33889352473. The reversal of 33889352440 is 4425398833.

It is a super-2 number, since 2×33889352440² (a number of 22 digits) 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 31 ways as a sum of consecutive naturals, for example, 2102010 + ... + 2118070.

Almost surely, 2^33889352440 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 33889352440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42153112800).

33889352440 is an abundant number, since it is smaller than the sum of its proper divisors (50416873160).

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

33889352440 is a wasteful number, since it uses less digits than its factorization.

33889352440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16225 (or 16221 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 33889352440 in words is "thirty-three billion, eight hundred eighty-nine million, three hundred fifty-two thousand, four hundred forty".