40328946 has 48 divisors (see below), whose sum is σ = 100324224. Its totient is φ = 11469312.

The previous prime is 40328941. The next prime is 40328993. The reversal of 40328946 is 64982304.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40328946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40328941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32530 + ... + 33746.

It is an arithmetic number, because the mean of its divisors is an integer number (2090088).

Almost surely, 2^40328946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40328946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50162112).

40328946 is an abundant number, since it is smaller than the sum of its proper divisors (59995278).

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

40328946 is a wasteful number, since it uses less digits than its factorization.

40328946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 40328946 is about 6350.5075387720. The cubic root of 40328946 is about 342.9301140813.

The spelling of 40328946 in words is "forty million, three hundred twenty-eight thousand, nine hundred forty-six".