111478890 has 64 divisors (see below), whose sum is σ = 283098240. Its totient is φ = 28016640.

The previous prime is 111478853. The next prime is 111478897. The reversal of 111478890 is 98874111.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111478897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146110 + ... + 146870.

It is an arithmetic number, because the mean of its divisors is an integer number (4423410).

Almost surely, 2^111478890 is an apocalyptic number.

111478890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111478890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141549120).

111478890 is an abundant number, since it is smaller than the sum of its proper divisors (171619350).

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

111478890 is a wasteful number, since it uses less digits than its factorization.

111478890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047.

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 111478890 is about 10558.3564061837. The cubic root of 111478890 is about 481.2797015457.

The spelling of 111478890 in words is "one hundred eleven million, four hundred seventy-eight thousand, eight hundred ninety".