111952240 has 20 divisors (see below), whose sum is σ = 260289144. Its totient is φ = 44780864.

The previous prime is 111952229. The next prime is 111952241. The reversal of 111952240 is 42259111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111952241) 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 3 ways as a sum of consecutive naturals, for example, 699622 + ... + 699781.

Almost surely, 2^111952240 is an apocalyptic number.

111952240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111952240 is an abundant number, since it is smaller than the sum of its proper divisors (148336904).

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

111952240 is a wasteful number, since it uses less digits than its factorization.

111952240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399416 (or 1399410 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 111952240 is about 10580.7485557497. The cubic root of 111952240 is about 481.9599261920.

The spelling of 111952240 in words is "one hundred eleven million, nine hundred fifty-two thousand, two hundred forty".