40306305 has 16 divisors (see below), whose sum is σ = 69451200. Its totient is φ = 19843008.

The previous prime is 40306297. The next prime is 40306339. The reversal of 40306305 is 50360304.

It is not a de Polignac number, because 40306305 - 2³ = 40306297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103155 + ... + 103544.

It is an arithmetic number, because the mean of its divisors is an integer number (4340700).

Almost surely, 2^40306305 is an apocalyptic number.

It is an amenable number.

40306305 is a deficient number, since it is larger than the sum of its proper divisors (29144895).

40306305 is a wasteful number, since it uses less digits than its factorization.

40306305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206720.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 40306305 is about 6348.7246750824. The cubic root of 40306305 is about 342.8659274783.

Adding to 40306305 its reverse (50360304), we get a palindrome (90666609).

The spelling of 40306305 in words is "forty million, three hundred six thousand, three hundred five".