1073603440 has 160 divisors (see below), whose sum is σ = 3108551040. Its totient is φ = 335757312.

The previous prime is 1073603429. The next prime is 1073603441. The reversal of 1073603440 is 443063701.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1073603399 and 1073603408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1073603441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 647092 + ... + 648748.

It is an arithmetic number, because the mean of its divisors is an integer number (19428444).

Almost surely, 2^1073603440 is an apocalyptic number.

1073603440 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 1073603440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1554275520).

1073603440 is an abundant number, since it is smaller than the sum of its proper divisors (2034947600).

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

1073603440 is a wasteful number, since it uses less digits than its factorization.

1073603440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 1073603440 is about 32765.8883596951. Note that the first 3 decimals coincide. The cubic root of 1073603440 is about 1023.9560070211.

The spelling of 1073603440 in words is "one billion, seventy-three million, six hundred three thousand, four hundred forty".