28918360948 has 6 divisors (see below), whose sum is σ = 50607131666. Its totient is φ = 14459180472.

The previous prime is 28918360937. The next prime is 28918361111. The reversal of 28918360948 is 84906381982.

It can be written as a sum of positive squares in only one way, i.e., 26507747344 + 2410613604 = 162812^2 + 49098^2 .

It is a super-2 number, since 2×28918360948² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28918360892 and 28918360901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3614795115 + ... + 3614795122.

Almost surely, 2^28918360948 is an apocalyptic number.

It is an amenable number.

28918360948 is a deficient number, since it is larger than the sum of its proper divisors (21688770718).

28918360948 is a wasteful number, since it uses less digits than its factorization.

28918360948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7229590241 (or 7229590239 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 58.

The spelling of 28918360948 in words is "twenty-eight billion, nine hundred eighteen million, three hundred sixty thousand, nine hundred forty-eight".