712431728 has 20 divisors (see below), whose sum is σ = 1381635528. Its totient is φ = 355880640.

The previous prime is 712431721. The next prime is 712431737. The reversal of 712431728 is 827134217.

712431728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×712431728⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712431721) 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, 2951 + ... + 37862.

Almost surely, 2^712431728 is an apocalyptic number.

It is an amenable number.

712431728 is a deficient number, since it is larger than the sum of its proper divisors (669203800).

712431728 is a wasteful number, since it uses less digits than its factorization.

712431728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41912 (or 41906 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The square root of 712431728 is about 26691.4167477112. The cubic root of 712431728 is about 893.1294653720.

The spelling of 712431728 in words is "seven hundred twelve million, four hundred thirty-one thousand, seven hundred twenty-eight".