1113255840 has 96 divisors (see below), whose sum is σ = 3554905536. Its totient is φ = 292792320.

The previous prime is 1113255839. The next prime is 1113255841. The reversal of 1113255840 is 485523111.

It is an interprime number because it is at equal distance from previous prime (1113255839) and next prime (1113255841).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1113255798 and 1113255807.

It is not an unprimeable number, because it can be changed into a prime (1113255841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19155 + ... + 50925.

It is an arithmetic number, because the mean of its divisors is an integer number (37030266).

Almost surely, 2^1113255840 is an apocalyptic number.

1113255840 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 1113255840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1777452768).

1113255840 is an abundant number, since it is smaller than the sum of its proper divisors (2441649696).

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

1113255840 is a wasteful number, since it uses less digits than its factorization.

1113255840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31862 (or 31854 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1113255840 is about 33365.4887570975. The cubic root of 1113255840 is about 1036.4101574573.

Adding to 1113255840 its reverse (485523111), we get a palindrome (1598778951).

The spelling of 1113255840 in words is "one billion, one hundred thirteen million, two hundred fifty-five thousand, eight hundred forty".