1238118028 has 12 divisors (see below), whose sum is σ = 2476236112. Its totient is φ = 530622000.

The previous prime is 1238118019. The next prime is 1238118043. The reversal of 1238118028 is 8208118321.

1238118028 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1238117984 and 1238118002.

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, 22109223 + ... + 22109278.

Almost surely, 2^1238118028 is an apocalyptic number.

It is an amenable number.

1238118028 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.

1238118028 is a wasteful number, since it uses less digits than its factorization.

1238118028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44218512 (or 44218510 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 1238118028 is about 35186.9013696859. The cubic root of 1238118028 is about 1073.7932817342.

The spelling of 1238118028 in words is "one billion, two hundred thirty-eight million, one hundred eighteen thousand, twenty-eight".