32066440 has 64 divisors (see below), whose sum is σ = 83669760. Its totient is φ = 10832640.

The previous prime is 32066413. The next prime is 32066449. The reversal of 32066440 is 4466023.

32066440 = T₁₅₅ + T₁₅₆ + ... + T₅₈₀.

It is not an unprimeable number, because it can be changed into a prime (32066449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19074 + ... + 20686.

It is an arithmetic number, because the mean of its divisors is an integer number (1307340).

Almost surely, 2^32066440 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 32066440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41834880).

32066440 is an abundant number, since it is smaller than the sum of its proper divisors (51603320).

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

32066440 is a wasteful number, since it uses less digits than its factorization.

32066440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 32066440 is about 5662.7237262646. The cubic root of 32066440 is about 317.6997812646.

The spelling of 32066440 in words is "thirty-two million, sixty-six thousand, four hundred forty".