28729664320036 has 9 divisors (see below), whose sum is σ = 50276931320091. Its totient is φ = 14364826800012.

The previous prime is 28729664320003. The next prime is 28729664320051. The reversal of 28729664320036 is 63002346692782.

The square root of 28729664320036 is 5360006.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×28729664320036² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9380011 + ... + 12060013.

Almost surely, 2^{28729664320036} is an apocalyptic number.

28729664320036 is the 5360006-th square number.

It is an amenable number.

28729664320036 is a deficient number, since it is larger than the sum of its proper divisors (21547267000055).

28729664320036 is an frugal number, since it uses more digits than its factorization.

28729664320036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360010 (or 2680005 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 58.

The spelling of 28729664320036 in words is "twenty-eight trillion, seven hundred twenty-nine billion, six hundred sixty-four million, three hundred twenty thousand, thirty-six".