40016564 has 12 divisors (see below), whose sum is σ = 80033184. Its totient is φ = 17149944.

The previous prime is 40016563. The next prime is 40016569. The reversal of 40016564 is 46561004.

It is a happy number.

40016564 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40016563) 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, 714554 + ... + 714609.

It is an arithmetic number, because the mean of its divisors is an integer number (6669432).

Almost surely, 2^40016564 is an apocalyptic number.

It is an amenable number.

40016564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40016564 is a wasteful number, since it uses less digits than its factorization.

40016564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429174 (or 1429172 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40016564 is about 6325.8646839780. The cubic root of 40016564 is about 342.0423895567.

Adding to 40016564 its reverse (46561004), we get a palindrome (86577568).

The spelling of 40016564 in words is "forty million, sixteen thousand, five hundred sixty-four".