28768493970 has 24 divisors (see below), whose sum is σ = 74798084556. Its totient is φ = 7671598368.

The previous prime is 28768493947. The next prime is 28768493993. The reversal of 28768493970 is 7939486782.

28768493970 is a `hidden beast` number, since 2 + 8 + 76 + 8 + 493 + 9 + 70 = 666.

It is an interprime number because it is at equal distance from previous prime (28768493947) and next prime (28768493993).

It can be written as a sum of positive squares in 2 ways, for example, as 25819026489 + 2949467481 = 160683^2 + 54309^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28768493898 and 28768493907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159824877 + ... + 159825056.

Almost surely, 2^28768493970 is an apocalyptic number.

28768493970 is an abundant number, since it is smaller than the sum of its proper divisors (46029590586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28768493970 is a wasteful number, since it uses less digits than its factorization.

28768493970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319649946 (or 319649943 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 28768493970 in words is "twenty-eight billion, seven hundred sixty-eight million, four hundred ninety-three thousand, nine hundred seventy".