16478945 has 12 divisors (see below), whose sum is σ = 23003604. Its totient is φ = 11299680.

The previous prime is 16478941. The next prime is 16478951. The reversal of 16478945 is 54987461.

It can be written as a sum of positive squares in 2 ways, for example, as 9102289 + 7376656 = 3017^2 + 2716^2 .

It is not a de Polignac number, because 16478945 - 2² = 16478941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16478896 and 16478905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16478941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33386 + ... + 33875.

It is an arithmetic number, because the mean of its divisors is an integer number (1916967).

Almost surely, 2^16478945 is an apocalyptic number.

It is an amenable number.

16478945 is a deficient number, since it is larger than the sum of its proper divisors (6524659).

16478945 is an equidigital number, since it uses as much as digits as its factorization.

16478945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67280 (or 67273 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 16478945 is about 4059.4266836587. The cubic root of 16478945 is about 254.4738349645.

The spelling of 16478945 in words is "sixteen million, four hundred seventy-eight thousand, nine hundred forty-five".