11028138250 has 32 divisors (see below), whose sum is σ = 20703992400. Its totient is φ = 4398580800.

The previous prime is 11028138239. The next prime is 11028138257. The reversal of 11028138250 is 5283182011.

It can be written as a sum of positive squares in 8 ways, for example, as 280462009 + 10747676241 = 16747^2 + 103671^2 .

It is a super-2 number, since 2×11028138250² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11028138257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24052 + ... + 150448.

Almost surely, 2^11028138250 is an apocalyptic number.

11028138250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11028138250 is a deficient number, since it is larger than the sum of its proper divisors (9675854150).

11028138250 is a wasteful number, since it uses less digits than its factorization.

11028138250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126763 (or 126753 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The spelling of 11028138250 in words is "eleven billion, twenty-eight million, one hundred thirty-eight thousand, two hundred fifty".