40393632 has 96 divisors (see below), whose sum is σ = 114633792. Its totient is φ = 12406784.

The previous prime is 40393631. The next prime is 40393643. The reversal of 40393632 is 23639304.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 40393632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40393631) 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 15 ways as a sum of consecutive naturals, for example, 86263 + ... + 86729.

It is an arithmetic number, because the mean of its divisors is an integer number (1194102).

Almost surely, 2^40393632 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 40393632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57316896).

40393632 is an abundant number, since it is smaller than the sum of its proper divisors (74240160).

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

40393632 is a wasteful number, since it uses less digits than its factorization.

40393632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 40393632 is about 6355.5984769335. The cubic root of 40393632 is about 343.1133648232.

The spelling of 40393632 in words is "forty million, three hundred ninety-three thousand, six hundred thirty-two".