111640148 has 12 divisors (see below), whose sum is σ = 197305332. Its totient is φ = 55267200.

The previous prime is 111640147. The next prime is 111640153. The reversal of 111640148 is 841046111.

It can be written as a sum of positive squares in 2 ways, for example, as 48469444 + 63170704 = 6962^2 + 7948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111640147) 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, 137765 + ... + 138572.

It is an arithmetic number, because the mean of its divisors is an integer number (16442111).

Almost surely, 2^111640148 is an apocalyptic number.

It is an amenable number.

111640148 is a deficient number, since it is larger than the sum of its proper divisors (85665184).

111640148 is a wasteful number, since it uses less digits than its factorization.

111640148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276442 (or 276440 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 111640148 is about 10565.9901571031. The cubic root of 111640148 is about 481.5116522174.

Adding to 111640148 its reverse (841046111), we get a palindrome (952686259).

The spelling of 111640148 in words is "one hundred eleven million, six hundred forty thousand, one hundred forty-eight".