111528656 has 40 divisors (see below), whose sum is σ = 231604224. Its totient is φ = 51891840.

The previous prime is 111528649. The next prime is 111528661. The reversal of 111528656 is 656825111.

It is a happy number.

It is a super-2 number, since 2×111528656² = 24877282218332672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9521 + ... + 17711.

Almost surely, 2^111528656 is an apocalyptic number.

111528656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111528656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115802112).

111528656 is an abundant number, since it is smaller than the sum of its proper divisors (120075568).

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

111528656 is a wasteful number, since it uses less digits than its factorization.

111528656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8259 (or 8253 counting only the distinct ones).

The product of its digits is 14400, while the sum is 35.

The square root of 111528656 is about 10560.7128547272. The cubic root of 111528656 is about 481.3513079351.

The spelling of 111528656 in words is "one hundred eleven million, five hundred twenty-eight thousand, six hundred fifty-six".