1728013406 has 64 divisors (see below), whose sum is σ = 3181939200. Its totient is φ = 687429504.

The previous prime is 1728013393. The next prime is 1728013411. The reversal of 1728013406 is 6043108271.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3102080 + ... + 3102636.

It is an arithmetic number, because the mean of its divisors is an integer number (49717800).

Almost surely, 2^1728013406 is an apocalyptic number.

1728013406 is a deficient number, since it is larger than the sum of its proper divisors (1453925794).

1728013406 is a wasteful number, since it uses less digits than its factorization.

1728013406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1728013406 is about 41569.3806304592. The cubic root of 1728013406 is about 1200.0031032327.

The spelling of 1728013406 in words is "one billion, seven hundred twenty-eight million, thirteen thousand, four hundred six".