40004352 has 108 divisors (see below), whose sum is σ = 117182520. Its totient is φ = 13123584.

The previous prime is 40004351. The next prime is 40004357. The reversal of 40004352 is 25340004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40004351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223399 + ... + 223577.

Almost surely, 2^40004352 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 40004352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58591260).

40004352 is an abundant number, since it is smaller than the sum of its proper divisors (77178168).

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

40004352 is a wasteful number, since it uses less digits than its factorization.

40004352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40004352 is about 6324.8993667884. The cubic root of 40004352 is about 342.0075919111.

Adding to 40004352 its reverse (25340004), we get a palindrome (65344356).

The spelling of 40004352 in words is "forty million, four thousand, three hundred fifty-two".