16447073 has 4 divisors (see below), whose sum is σ = 16458948. Its totient is φ = 16435200.

The previous prime is 16447069. The next prime is 16447087. The reversal of 16447073 is 37074461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11751184 + 4695889 = 3428^2 + 2167^2 .

It is a cyclic number.

It is not a de Polignac number, because 16447073 - 2² = 16447069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16447033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3536 + ... + 6737.

It is an arithmetic number, because the mean of its divisors is an integer number (4114737).

Almost surely, 2^16447073 is an apocalyptic number.

It is an amenable number.

16447073 is a deficient number, since it is larger than the sum of its proper divisors (11875).

16447073 is a wasteful number, since it uses less digits than its factorization.

16447073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11874.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 16447073 is about 4055.4991061520. The cubic root of 16447073 is about 254.3096694267.

The spelling of 16447073 in words is "sixteen million, four hundred forty-seven thousand, seventy-three".