40304505 has 16 divisors (see below), whose sum is σ = 64575360. Its totient is φ = 21466368.

The previous prime is 40304503. The next prime is 40304527. The reversal of 40304505 is 50540304.

It is a happy number.

It is not a de Polignac number, because 40304505 - 2¹ = 40304503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40304503) 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, 13804 + ... + 16466.

It is an arithmetic number, because the mean of its divisors is an integer number (4035960).

Almost surely, 2^40304505 is an apocalyptic number.

It is an amenable number.

40304505 is a deficient number, since it is larger than the sum of its proper divisors (24270855).

40304505 is a wasteful number, since it uses less digits than its factorization.

40304505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40304505 is about 6348.5829127452. The cubic root of 40304505 is about 342.8608234972.

Adding to 40304505 its reverse (50540304), we get a palindrome (90844809).

The spelling of 40304505 in words is "forty million, three hundred four thousand, five hundred five".