2001703520 has 48 divisors (see below), whose sum is σ = 4747105440. Its totient is φ = 797620224.

The previous prime is 2001703519. The next prime is 2001703531. The reversal of 2001703520 is 253071002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2001703492 and 2001703501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18296 + ... + 65864.

It is an arithmetic number, because the mean of its divisors is an integer number (98898030).

Almost surely, 2^2001703520 is an apocalyptic number.

2001703520 is a gapful number since it is divisible by the number (20) 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 2001703520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2373552720).

2001703520 is an abundant number, since it is smaller than the sum of its proper divisors (2745401920).

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

2001703520 is a wasteful number, since it uses less digits than its factorization.

2001703520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47847 (or 47839 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 2001703520 is about 44740.4014286864. The cubic root of 2001703520 is about 1260.2786651644.

Adding to 2001703520 its reverse (253071002), we get a palindrome (2254774522).

The spelling of 2001703520 in words is "two billion, one million, seven hundred three thousand, five hundred twenty".