1115344420 has 24 divisors (see below), whose sum is σ = 2344475448. Its totient is φ = 445708800.

The previous prime is 1115344409. The next prime is 1115344469. The reversal of 1115344420 is 244435111.

It can be written as a sum of positive squares in 4 ways, for example, as 357663744 + 757680676 = 18912^2 + 27526^2 .

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, 5061 + ... + 47500.

It is an arithmetic number, because the mean of its divisors is an integer number (97686477).

Almost surely, 2^1115344420 is an apocalyptic number.

1115344420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115344420 is an abundant number, since it is smaller than the sum of its proper divisors (1229131028).

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

1115344420 is a wasteful number, since it uses less digits than its factorization.

1115344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53631 (or 53629 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1115344420 is about 33396.7725985611. The cubic root of 1115344420 is about 1037.0578891445.

Adding to 1115344420 its reverse (244435111), we get a palindrome (1359779531).

The spelling of 1115344420 in words is "one billion, one hundred fifteen million, three hundred forty-four thousand, four hundred twenty".