111403978 has 8 divisors (see below), whose sum is σ = 190978272. Its totient is φ = 47744556.

The previous prime is 111403969. The next prime is 111403979. The reversal of 111403978 is 879304111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (111403979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3978700 + ... + 3978727.

It is an arithmetic number, because the mean of its divisors is an integer number (23872284).

Almost surely, 2^111403978 is an apocalyptic number.

111403978 is a deficient number, since it is larger than the sum of its proper divisors (79574294).

111403978 is an equidigital number, since it uses as much as digits as its factorization.

111403978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7957436.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 111403978 is about 10554.8082881690. The cubic root of 111403978 is about 481.1718733466.

The spelling of 111403978 in words is "one hundred eleven million, four hundred three thousand, nine hundred seventy-eight".