40400304 has 120 divisors (see below), whose sum is σ = 123407280. Its totient is φ = 11354112.

The previous prime is 40400299. The next prime is 40400323. The reversal of 40400304 is 40300404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209232 + ... + 209424.

It is an arithmetic number, because the mean of its divisors is an integer number (1028394).

Almost surely, 2^40400304 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 40400304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61703640).

40400304 is an abundant number, since it is smaller than the sum of its proper divisors (83006976).

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

40400304 is a wasteful number, since it uses less digits than its factorization.

40400304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40400304 is about 6356.1233468208. The cubic root of 40400304 is about 343.1322549818.

Adding to 40400304 its reverse (40300404), we get a palindrome (80700708).

It can be divided in two parts, 40400 and 304, that added together give a palindrome (40704).

The spelling of 40400304 in words is "forty million, four hundred thousand, three hundred four".