111955446 has 56 divisors (see below), whose sum is σ = 260011584. Its totient is φ = 36100080.

The previous prime is 111955423. The next prime is 111955447. The reversal of 111955446 is 644559111.

It is a self number, because there is not a number n which added to its sum of digits gives 111955446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111955447) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 43960 + ... + 46436.

It is an arithmetic number, because the mean of its divisors is an integer number (4643064).

Almost surely, 2^111955446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111955446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130005792).

111955446 is an abundant number, since it is smaller than the sum of its proper divisors (148056138).

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

111955446 is an equidigital number, since it uses as much as digits as its factorization.

111955446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528 (or 2513 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 111955446 is about 10580.9000562334. The cubic root of 111955446 is about 481.9645268109.

It can be divided in two parts, 11195 and 5446, that added together give a square (16641 = 129²).

The spelling of 111955446 in words is "one hundred eleven million, nine hundred fifty-five thousand, four hundred forty-six".