1603530240 has 160 divisors (see below), whose sum is σ = 5520959136. Its totient is φ = 394690560.

The previous prime is 1603530233. The next prime is 1603530293. The reversal of 1603530240 is 420353061.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1603530240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91810 + ... + 107870.

Almost surely, 2^1603530240 is an apocalyptic number.

1603530240 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 1603530240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2760479568).

1603530240 is an abundant number, since it is smaller than the sum of its proper divisors (3917428896).

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

1603530240 is a wasteful number, since it uses less digits than its factorization.

1603530240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16100 (or 16084 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1603530240 is about 40044.1036858112. The cubic root of 1603530240 is about 1170.4666704376.

The spelling of 1603530240 in words is "one billion, six hundred three million, five hundred thirty thousand, two hundred forty".