40304144 has 40 divisors (see below), whose sum is σ = 83887488. Its totient is φ = 18690560.

The previous prime is 40304129. The next prime is 40304183. The reversal of 40304144 is 44140304.

40304144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18269 + ... + 20355.

Almost surely, 2^40304144 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 40304144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41943744).

40304144 is an abundant number, since it is smaller than the sum of its proper divisors (43583344).

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

40304144 is a wasteful number, since it uses less digits than its factorization.

40304144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40304144 is about 6348.5544811398. The cubic root of 40304144 is about 342.8597998471.

Adding to 40304144 its reverse (44140304), we get a palindrome (84444448).

The spelling of 40304144 in words is "forty million, three hundred four thousand, one hundred forty-four".