40665352 has 64 divisors (see below), whose sum is σ = 95114880. Its totient is φ = 15869952.

The previous prime is 40665349. The next prime is 40665371. The reversal of 40665352 is 25356604.

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, 60088 + ... + 60760.

It is an arithmetic number, because the mean of its divisors is an integer number (1486170).

Almost surely, 2^40665352 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 40665352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47557440).

40665352 is an abundant number, since it is smaller than the sum of its proper divisors (54449528).

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

40665352 is a wasteful number, since it uses less digits than its factorization.

40665352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 40665352 is about 6376.9390776453. The cubic root of 40665352 is about 343.8809981383.

The spelling of 40665352 in words is "forty million, six hundred sixty-five thousand, three hundred fifty-two".