1728241906 has 16 divisors (see below), whose sum is σ = 2628065088. Its totient is φ = 852286000.

The previous prime is 1728241901. The next prime is 1728241951. The reversal of 1728241906 is 6091428271.

It is not an unprimeable number, because it can be changed into a prime (1728241901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36861 + ... + 69391.

It is an arithmetic number, because the mean of its divisors is an integer number (164254068).

Almost surely, 2^1728241906 is an apocalyptic number.

1728241906 is a deficient number, since it is larger than the sum of its proper divisors (899823182).

1728241906 is a wasteful number, since it uses less digits than its factorization.

1728241906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32897.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1728241906 is about 41572.1289567903. The cubic root of 1728241906 is about 1200.0559941464.

The spelling of 1728241906 in words is "one billion, seven hundred twenty-eight million, two hundred forty-one thousand, nine hundred six".