28918362916 has 9 divisors (see below), whose sum is σ = 50607730299. Its totient is φ = 14459011404.

The previous prime is 28918362911. The next prime is 28918362923. The reversal of 28918362916 is 61926381982.

The square root of 28918362916 is 170054.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28918362911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 297595 + ... + 382621.

Almost surely, 2^28918362916 is an apocalyptic number.

28918362916 is the 170054-th square number.

It is an amenable number.

28918362916 is a deficient number, since it is larger than the sum of its proper divisors (21689367383).

28918362916 is an frugal number, since it uses more digits than its factorization.

28918362916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170058 (or 85029 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 55.

The spelling of 28918362916 in words is "twenty-eight billion, nine hundred eighteen million, three hundred sixty-two thousand, nine hundred sixteen".