40304345 has 8 divisors (see below), whose sum is σ = 50033160. Its totient is φ = 31131520.

The previous prime is 40304323. The next prime is 40304401. The reversal of 40304345 is 54340304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 222784 + 40081561 = 472^2 + 6331^2 .

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

It is not a de Polignac number, because 40304345 - 2²⁴ = 23527129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40304345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138836 + ... + 139125.

It is an arithmetic number, because the mean of its divisors is an integer number (6254145).

Almost surely, 2^40304345 is an apocalyptic number.

It is an amenable number.

40304345 is a deficient number, since it is larger than the sum of its proper divisors (9728815).

40304345 is a wasteful number, since it uses less digits than its factorization.

40304345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277995.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 40304345 is about 6348.5703114953. The cubic root of 40304345 is about 342.8603698026.

Adding to 40304345 its reverse (54340304), we get a palindrome (94644649).

The spelling of 40304345 in words is "forty million, three hundred four thousand, three hundred forty-five".