40304664 has 96 divisors (see below), whose sum is σ = 114660000. Its totient is φ = 12773376.

The previous prime is 40304659. The next prime is 40304669. The reversal of 40304664 is 46640304.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40304659) and next prime (40304669).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40304669) 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, 202437 + ... + 202635.

It is an arithmetic number, because the mean of its divisors is an integer number (1194375).

Almost surely, 2^40304664 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 40304664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57330000).

40304664 is an abundant number, since it is smaller than the sum of its proper divisors (74355336).

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

40304664 is a wasteful number, since it uses less digits than its factorization.

40304664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 40304664 is about 6348.5954352124. The cubic root of 40304664 is about 342.8612743550.

Adding to 40304664 its reverse (46640304), we get a palindrome (86944968).

It can be divided in two parts, 40 and 304664, that added together give a square (304704 = 552²).

The spelling of 40304664 in words is "forty million, three hundred four thousand, six hundred sixty-four".