1728716790 has 16 divisors (see below), whose sum is σ = 4148920368. Its totient is φ = 460991136.

The previous prime is 1728716747. The next prime is 1728716797. The reversal of 1728716790 is 976178271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728716797) 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, 28811917 + ... + 28811976.

It is an arithmetic number, because the mean of its divisors is an integer number (259307523).

Almost surely, 2^1728716790 is an apocalyptic number.

1728716790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1728716790 is an abundant number, since it is smaller than the sum of its proper divisors (2420203578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1728716790 is a wasteful number, since it uses less digits than its factorization.

1728716790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57623903.

The product of its (nonzero) digits is 296352, while the sum is 48.

The square root of 1728716790 is about 41577.8401314931. The cubic root of 1728716790 is about 1200.1659006742.

The spelling of 1728716790 in words is "one billion, seven hundred twenty-eight million, seven hundred sixteen thousand, seven hundred ninety".