32266640 has 80 divisors (see below), whose sum is σ = 86518272. Its totient is φ = 10962432.

The previous prime is 32266609. The next prime is 32266649. The reversal of 32266640 is 4666223.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×32266640² = 2082272113779200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32266649) 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, 87737 + ... + 88103.

Almost surely, 2^32266640 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 32266640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43259136).

32266640 is an abundant number, since it is smaller than the sum of its proper divisors (54251632).

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

32266640 is a wasteful number, since it uses less digits than its factorization.

32266640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 32266640 is about 5680.3732271744. The cubic root of 32266640 is about 318.3595737501.

The spelling of 32266640 in words is "thirty-two million, two hundred sixty-six thousand, six hundred forty".