1111022440 has 64 divisors (see below), whose sum is σ = 2731786560. Its totient is φ = 403307520.

The previous prime is 1111022389. The next prime is 1111022467. The reversal of 1111022440 is 442201111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298672 + ... + 302368.

It is an arithmetic number, because the mean of its divisors is an integer number (42684165).

Almost surely, 2^1111022440 is an apocalyptic number.

1111022440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111022440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1365893280).

1111022440 is an abundant number, since it is smaller than the sum of its proper divisors (1620764120).

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

1111022440 is a wasteful number, since it uses less digits than its factorization.

1111022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402 (or 4398 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1111022440 is about 33332.0032401294. The cubic root of 1111022440 is about 1035.7166157425.

Adding to 1111022440 its reverse (442201111), we get a palindrome (1553223551).

The spelling of 1111022440 in words is "one billion, one hundred eleven million, twenty-two thousand, four hundred forty".