40381032 has 16 divisors (see below), whose sum is σ = 100952640. Its totient is φ = 13460336.

The previous prime is 40380971. The next prime is 40381039. The reversal of 40381032 is 23018304.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40381039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841248 + ... + 841295.

It is an arithmetic number, because the mean of its divisors is an integer number (6309540).

Almost surely, 2^40381032 is an apocalyptic number.

It is an amenable number.

40381032 is an abundant number, since it is smaller than the sum of its proper divisors (60571608).

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

40381032 is a wasteful number, since it uses less digits than its factorization.

40381032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682552 (or 1682548 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40381032 is about 6354.6071475741. The cubic root of 40381032 is about 343.0776852885.

Adding to 40381032 its reverse (23018304), we get a palindrome (63399336).

The spelling of 40381032 in words is "forty million, three hundred eighty-one thousand, thirty-two".