1115351420 has 48 divisors (see below), whose sum is σ = 2460628800. Its totient is φ = 423853056.

The previous prime is 1115351411. The next prime is 1115351431. The reversal of 1115351420 is 241535111.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60404 + ... + 76676.

It is an arithmetic number, because the mean of its divisors is an integer number (51263100).

Almost surely, 2^1115351420 is an apocalyptic number.

1115351420 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 1115351420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1230314400).

1115351420 is an abundant number, since it is smaller than the sum of its proper divisors (1345277380).

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

1115351420 is a wasteful number, since it uses less digits than its factorization.

1115351420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16454 (or 16452 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1115351420 is about 33396.8773989426. The cubic root of 1115351420 is about 1037.0600586956.

Adding to 1115351420 its reverse (241535111), we get a palindrome (1356886531).

The spelling of 1115351420 in words is "one billion, one hundred fifteen million, three hundred fifty-one thousand, four hundred twenty".