1028018013228 has 18 divisors (see below), whose sum is σ = 2598601089084. Its totient is φ = 342672671064.

The previous prime is 1028018013223. The next prime is 1028018013241. The reversal of 1028018013228 is 8223108108201.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 28556055923 = 1028018013228 / (1 + 0 + 2 + 8 + 0 + 1 + 8 + 0 + 1 + 3 + 2 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 1028018013192 and 1028018013201.

It is not an unprimeable number, because it can be changed into a prime (1028018013223) 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 5 ways as a sum of consecutive naturals, for example, 14278027926 + ... + 14278027997.

Almost surely, 2^{1028018013228} is an apocalyptic number.

1028018013228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1028018013228 is an abundant number, since it is smaller than the sum of its proper divisors (1570583075856).

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

1028018013228 is a wasteful number, since it uses less digits than its factorization.

1028018013228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28556055933 (or 28556055928 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The spelling of 1028018013228 in words is "one trillion, twenty-eight billion, eighteen million, thirteen thousand, two hundred twenty-eight".