111427440 has 40 divisors (see below), whose sum is σ = 345425808. Its totient is φ = 29713920.

The previous prime is 111427411. The next prime is 111427441. The reversal of 111427440 is 44724111.

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 111427440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111427441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231901 + ... + 232380.

Almost surely, 2^111427440 is an apocalyptic number.

111427440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111427440 is an abundant number, since it is smaller than the sum of its proper divisors (233998368).

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

111427440 is a wasteful number, since it uses less digits than its factorization.

111427440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464297 (or 464291 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 111427440 is about 10555.9196662347. The cubic root of 111427440 is about 481.2056497051.

The spelling of 111427440 in words is "one hundred eleven million, four hundred twenty-seven thousand, four hundred forty".