11130428638 has 16 divisors (see below), whose sum is σ = 19088907264. Its totient is φ = 4768140600.

The previous prime is 11130428633. The next prime is 11130428651. The reversal of 11130428638 is 83682403111.

It is a super-2 number, since 2×11130428638² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11130428597 and 11130428606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11130428633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136170 + ... + 201997.

It is an arithmetic number, because the mean of its divisors is an integer number (1193056704).

Almost surely, 2^11130428638 is an apocalyptic number.

11130428638 is a deficient number, since it is larger than the sum of its proper divisors (7958478626).

11130428638 is a wasteful number, since it uses less digits than its factorization.

11130428638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340527.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 11130428638 in words is "eleven billion, one hundred thirty million, four hundred twenty-eight thousand, six hundred thirty-eight".