40305345 has 8 divisors (see below), whose sum is σ = 64488576. Its totient is φ = 21496176.

The previous prime is 40305313. The next prime is 40305347. The reversal of 40305345 is 54350304.

It is a happy number.

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

It is not a de Polignac number, because 40305345 - 2⁵ = 40305313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40305347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1343497 + ... + 1343526.

It is an arithmetic number, because the mean of its divisors is an integer number (8061072).

Almost surely, 2^40305345 is an apocalyptic number.

It is an amenable number.

40305345 is a deficient number, since it is larger than the sum of its proper divisors (24183231).

40305345 is a wasteful number, since it uses less digits than its factorization.

40305345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687031.

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

The square root of 40305345 is about 6348.6490688965. The cubic root of 40305345 is about 342.8632053740.

Adding to 40305345 its reverse (54350304), we get a palindrome (94655649).

The spelling of 40305345 in words is "forty million, three hundred five thousand, three hundred forty-five".