40306534 has 8 divisors (see below), whose sum is σ = 63088560. Its totient is φ = 19277016.

The previous prime is 40306531. The next prime is 40306559. The reversal of 40306534 is 43560304.

40306534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 40306499 and 40306508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40306531) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 438069 + ... + 438160.

It is an arithmetic number, because the mean of its divisors is an integer number (7886070).

Almost surely, 2^40306534 is an apocalyptic number.

40306534 is a deficient number, since it is larger than the sum of its proper divisors (22782026).

40306534 is a wasteful number, since it uses less digits than its factorization.

40306534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876254.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 40306534 is about 6348.7427101750. The cubic root of 40306534 is about 342.8665768072.

Adding to 40306534 its reverse (43560304), we get a palindrome (83866838).

The spelling of 40306534 in words is "forty million, three hundred six thousand, five hundred thirty-four".