40345305 has 64 divisors (see below), whose sum is σ = 86704128. Its totient is φ = 15471360.

The previous prime is 40345297. The next prime is 40345367. The reversal of 40345305 is 50354304.

It is a happy number.

It is not a de Polignac number, because 40345305 - 2³ = 40345297 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13672 + ... + 16358.

It is an arithmetic number, because the mean of its divisors is an integer number (1354752).

Almost surely, 2^40345305 is an apocalyptic number.

It is an amenable number.

40345305 is an abundant number, since it is smaller than the sum of its proper divisors (46358823).

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

40345305 is a wasteful number, since it uses less digits than its factorization.

40345305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 40345305 is about 6351.7954154711. The cubic root of 40345305 is about 342.9764764415.

Adding to 40345305 its reverse (50354304), we get a palindrome (90699609).

It can be divided in two parts, 4034 and 5305, that added together give a palindrome (9339).

The spelling of 40345305 in words is "forty million, three hundred forty-five thousand, three hundred five".