16723449 has 16 divisors (see below), whose sum is σ = 25381440. Its totient is φ = 10876320.

The previous prime is 16723423. The next prime is 16723463. The reversal of 16723449 is 94432761.

It is not a de Polignac number, because 16723449 - 2²⁰ = 15674873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16723409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6447 + ... + 8660.

It is an arithmetic number, because the mean of its divisors is an integer number (1586340).

Almost surely, 2^16723449 is an apocalyptic number.

It is an amenable number.

16723449 is a deficient number, since it is larger than the sum of its proper divisors (8657991).

16723449 is a wasteful number, since it uses less digits than its factorization.

16723449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15157 (or 15151 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 16723449 is about 4089.4313785660. The cubic root of 16723449 is about 255.7262342361.

The spelling of 16723449 in words is "sixteen million, seven hundred twenty-three thousand, four hundred forty-nine".