40644604 has 48 divisors (see below), whose sum is σ = 95510016. Its totient is φ = 14616000.

The previous prime is 40644601. The next prime is 40644619.

40644604 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40644601) 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, 1072 + ... + 9079.

It is an arithmetic number, because the mean of its divisors is an integer number (1989792).

Almost surely, 2^40644604 is an apocalyptic number.

40644604 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40644604 is an abundant number, since it is smaller than the sum of its proper divisors (54865412).

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

40644604 is a wasteful number, since it uses less digits than its factorization.

40644604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10186 (or 10184 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 40644604 is about 6375.3120707931. The cubic root of 40644604 is about 343.8225039791.

It can be divided in two parts, 4064 and 4604, that added together give a palindrome (8668).

The spelling of 40644604 in words is "forty million, six hundred forty-four thousand, six hundred four".