32990240 has 96 divisors (see below), whose sum is σ = 82301184. Its totient is φ = 12482560.

The previous prime is 32990227. The next prime is 32990297. The reversal of 32990240 is 4209923.

32990240 is nontrivially palindromic in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308267 + ... + 308373.

It is an arithmetic number, because the mean of its divisors is an integer number (857304).

Almost surely, 2^32990240 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 32990240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41150592).

32990240 is an abundant number, since it is smaller than the sum of its proper divisors (49310944).

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

32990240 is a wasteful number, since it uses less digits than its factorization.

32990240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 32990240 is about 5743.7130847562. The cubic root of 32990240 is about 320.7218081290.

The spelling of 32990240 in words is "thirty-two million, nine hundred ninety thousand, two hundred forty".