16345004 has 18 divisors (see below), whose sum is σ = 30974580. Its totient is φ = 7543536.

The previous prime is 16345003. The next prime is 16345033. The reversal of 16345004 is 40054361.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16345003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11414 + ... + 12765.

It is an arithmetic number, because the mean of its divisors is an integer number (1720810).

Almost surely, 2^16345004 is an apocalyptic number.

It is an amenable number.

16345004 is a deficient number, since it is larger than the sum of its proper divisors (14629576).

16345004 is a wasteful number, since it uses less digits than its factorization.

16345004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24209 (or 24194 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 16345004 is about 4042.8954970417. The cubic root of 16345004 is about 253.7825033792.

Adding to 16345004 its reverse (40054361), we get a palindrome (56399365).

The spelling of 16345004 in words is "sixteen million, three hundred forty-five thousand, four".