128798012 has 12 divisors (see below), whose sum is σ = 257596080. Its totient is φ = 55199136.

The previous prime is 128797957. The next prime is 128798039. The reversal of 128798012 is 210897821.

128798012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2299937 + ... + 2299992.

It is an arithmetic number, because the mean of its divisors is an integer number (21466340).

Almost surely, 2^128798012 is an apocalyptic number.

It is an amenable number.

128798012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128798012 is a wasteful number, since it uses less digits than its factorization.

128798012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599940 (or 4599938 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 128798012 is about 11348.9211822093. The cubic root of 128798012 is about 505.0135760818.

It can be divided in two parts, 1287 and 98012, that added together give a palindrome (99299).

The spelling of 128798012 in words is "one hundred twenty-eight million, seven hundred ninety-eight thousand, twelve".