1712320728 has 32 divisors (see below), whose sum is σ = 4299188400. Its totient is φ = 568322048.

The previous prime is 1712320711. The next prime is 1712320763. The reversal of 1712320728 is 8270232171.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147513 + ... + 158696.

Almost surely, 2^1712320728 is an apocalyptic number.

It is an amenable number.

1712320728 is an abundant number, since it is smaller than the sum of its proper divisors (2586867672).

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

1712320728 is a wasteful number, since it uses less digits than its factorization.

1712320728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306451 (or 306447 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1712320728 is about 41380.1972929081. The cubic root of 1712320728 is about 1196.3595057253.

Adding to 1712320728 its reverse (8270232171), we get a palindrome (9982552899).

The spelling of 1712320728 in words is "one billion, seven hundred twelve million, three hundred twenty thousand, seven hundred twenty-eight".