16470728 has 8 divisors (see below), whose sum is σ = 30882630. Its totient is φ = 8235360.

The previous prime is 16470721. The next prime is 16470749. The reversal of 16470728 is 82707461.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16467364 + 3364 = 4058^2 + 58^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (16470721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1029413 + ... + 1029428.

Almost surely, 2^16470728 is an apocalyptic number.

It is an amenable number.

16470728 is a deficient number, since it is larger than the sum of its proper divisors (14411902).

16470728 is a wasteful number, since it uses less digits than its factorization.

16470728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058847 (or 2058843 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 16470728 is about 4058.4144687304. The cubic root of 16470728 is about 254.4315313026.

The spelling of 16470728 in words is "sixteen million, four hundred seventy thousand, seven hundred twenty-eight".