1728232612 has 12 divisors (see below), whose sum is σ = 3128697180. Its totient is φ = 834319136.

The previous prime is 1728232573. The next prime is 1728232613. The reversal of 1728232612 is 2162328271.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 969450496 + 758782116 = 31136^2 + 27546^2 .

It is a super-2 number, since 2×1728232612² = 5973575922360685088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1728232613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7449163 + ... + 7449394.

It is an arithmetic number, because the mean of its divisors is an integer number (260724765).

Almost surely, 2^1728232612 is an apocalyptic number.

It is an amenable number.

1728232612 is a deficient number, since it is larger than the sum of its proper divisors (1400464568).

1728232612 is a wasteful number, since it uses less digits than its factorization.

1728232612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14898590 (or 14898588 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 1728232612 is about 41572.0171750181. The cubic root of 1728232612 is about 1200.0538429544.

It can be divided in two parts, 17282 and 32612, that added together give a palindrome (49894).

The spelling of 1728232612 in words is "one billion, seven hundred twenty-eight million, two hundred thirty-two thousand, six hundred twelve".