28722353736976 has 45 divisors (see below), whose sum is σ = 56611252811461. Its totient is φ = 14117145409472.

The previous prime is 28722353736971. The next prime is 28722353737003. The reversal of 28722353736976 is 67963735322782.

The square root of 28722353736976 is 5359324.

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

It can be written as a sum of positive squares in only one way, i.e., 123816719376 + 28598537017600 = 351876^2 + 5347760^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28722353736971) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1264789110 + ... + 1264811818.

Almost surely, 2^{28722353736976} is an apocalyptic number.

28722353736976 is the 5359324-th square number.

It is an amenable number.

28722353736976 is a deficient number, since it is larger than the sum of its proper divisors (27888899074485).

28722353736976 is an frugal number, since it uses more digits than its factorization.

28722353736976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45544 (or 22770 counting only the distinct ones).

The product of its digits is 960180480, while the sum is 70.

The spelling of 28722353736976 in words is "twenty-eight trillion, seven hundred twenty-two billion, three hundred fifty-three million, seven hundred thirty-six thousand, nine hundred seventy-six".