111434640 has 40 divisors (see below), whose sum is σ = 345448128. Its totient is φ = 29715840.

The previous prime is 111434623. The next prime is 111434651. The reversal of 111434640 is 46434111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 111434640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231916 + ... + 232395.

Almost surely, 2^111434640 is an apocalyptic number.

111434640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111434640 is an abundant number, since it is smaller than the sum of its proper divisors (234013488).

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

111434640 is a wasteful number, since it uses less digits than its factorization.

111434640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464327 (or 464321 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 111434640 is about 10556.2607015932. The cubic root of 111434640 is about 481.2160140164.

Adding to 111434640 its reverse (46434111), we get a palindrome (157868751).

The spelling of 111434640 in words is "one hundred eleven million, four hundred thirty-four thousand, six hundred forty".