40566504 has 64 divisors (see below), whose sum is σ = 113653440. Its totient is φ = 11957760.

The previous prime is 40566479. The next prime is 40566509.

40566504 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40566509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7692 + ... + 11844.

It is an arithmetic number, because the mean of its divisors is an integer number (1775835).

Almost surely, 2^40566504 is an apocalyptic number.

40566504 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40566504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56826720).

40566504 is an abundant number, since it is smaller than the sum of its proper divisors (73086936).

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

40566504 is a wasteful number, since it uses less digits than its factorization.

40566504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210 (or 4206 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 40566504 is about 6369.1839351678. The cubic root of 40566504 is about 343.6021405306.

The spelling of 40566504 in words is "forty million, five hundred sixty-six thousand, five hundred four".