111216408 has 64 divisors (see below), whose sum is σ = 292861440. Its totient is φ = 35126784.

The previous prime is 111216407. The next prime is 111216467. The reversal of 111216408 is 804612111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111216401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61485 + ... + 63267.

It is an arithmetic number, because the mean of its divisors is an integer number (4575960).

Almost surely, 2^111216408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111216408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146430720).

111216408 is an abundant number, since it is smaller than the sum of its proper divisors (181645032).

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

111216408 is a wasteful number, since it uses less digits than its factorization.

111216408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 111216408 is about 10545.9190211190. The cubic root of 111216408 is about 480.9016732146.

Adding to 111216408 its reverse (804612111), we get a palindrome (915828519).

The spelling of 111216408 in words is "one hundred eleven million, two hundred sixteen thousand, four hundred eight".