1103620320 has 432 divisors, whose sum is σ = 4358560752. Its totient is φ = 252149760.

The previous prime is 1103620307. The next prime is 1103620321. The reversal of 1103620320 is 230263011.

1103620320 is a `hidden beast` number, since 1 + 10 + 3 + 620 + 32 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1103620293 and 1103620302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103620321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5718144 + ... + 5718336.

It is an arithmetic number, because the mean of its divisors is an integer number (10089261).

Almost surely, 2^1103620320 is an apocalyptic number.

1103620320 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 1103620320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2179280376).

1103620320 is an abundant number, since it is smaller than the sum of its proper divisors (3254940432).

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

1103620320 is a wasteful number, since it uses less digits than its factorization.

1103620320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1103620320 is about 33220.7814477625. The cubic root of 1103620320 is about 1033.4113554222.

Adding to 1103620320 its reverse (230263011), we get a palindrome (1333883331).

The spelling of 1103620320 in words is "one billion, one hundred three million, six hundred twenty thousand, three hundred twenty".