32989440 has 216 divisors, whose sum is σ = 117440064. Its totient is φ = 7884800.

The previous prime is 32989427. The next prime is 32989447. The reversal of 32989440 is 4498923.

It is not an unprimeable number, because it can be changed into a prime (32989447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464605 + ... + 464675.

It is an arithmetic number, because the mean of its divisors is an integer number (543704).

Almost surely, 2^32989440 is an apocalyptic number.

32989440 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 32989440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58720032).

32989440 is an abundant number, since it is smaller than the sum of its proper divisors (84450624).

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

32989440 is a wasteful number, since it uses less digits than its factorization.

32989440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 32989440 is about 5743.6434429724. The cubic root of 32989440 is about 320.7192156500.

The spelling of 32989440 in words is "thirty-two million, nine hundred eighty-nine thousand, four hundred forty".