40442328 has 80 divisors (see below), whose sum is σ = 114345000. Its totient is φ = 13353984.

The previous prime is 40442323. The next prime is 40442341. The reversal of 40442328 is 82324404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40442323) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 89848 + ... + 90296.

Almost surely, 2^40442328 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 40442328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57172500).

40442328 is an abundant number, since it is smaller than the sum of its proper divisors (73902672).

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

40442328 is a wasteful number, since it uses less digits than its factorization.

40442328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 40442328 is about 6359.4282761896. The cubic root of 40442328 is about 343.2511880225.

The spelling of 40442328 in words is "forty million, four hundred forty-two thousand, three hundred twenty-eight".