111853812 has 192 divisors, whose sum is σ = 340139520. Its totient is φ = 27869184.

The previous prime is 111853801. The next prime is 111853823. The reversal of 111853812 is 218358111.

It is an interprime number because it is at equal distance from previous prime (111853801) and next prime (111853823).

It is a super-2 number, since 2×111853812² = 25022550517862688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111853812.

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 63 ways as a sum of consecutive naturals, for example, 1532208 + ... + 1532280.

It is an arithmetic number, because the mean of its divisors is an integer number (1771560).

Almost surely, 2^111853812 is an apocalyptic number.

111853812 is a gapful number since it is divisible by the number (12) 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 111853812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170069760).

111853812 is an abundant number, since it is smaller than the sum of its proper divisors (228285708).

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

111853812 is a wasteful number, since it uses less digits than its factorization.

111853812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 168 counting only the distinct ones).

The product of its digits is 1920, while the sum is 30.

The square root of 111853812 is about 10576.0962552352. The cubic root of 111853812 is about 481.8186389760.

The spelling of 111853812 in words is "one hundred eleven million, eight hundred fifty-three thousand, eight hundred twelve".