10020520 has 32 divisors (see below), whose sum is σ = 22888800. Its totient is φ = 3947328.

The previous prime is 10020509. The next prime is 10020547. The reversal of 10020520 is 2502001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10020497 and 10020506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811 + ... + 4549.

It is an arithmetic number, because the mean of its divisors is an integer number (715275).

Almost surely, 2^10020520 is an apocalyptic number.

10020520 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 10020520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11444400).

10020520 is an abundant number, since it is smaller than the sum of its proper divisors (12868280).

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

10020520 is a wasteful number, since it uses less digits than its factorization.

10020520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817 (or 3813 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 10020520 is about 3165.5204943263. The cubic root of 10020520 is about 215.5907316542.

Adding to 10020520 its reverse (2502001), we get a palindrome (12522521).

The spelling of 10020520 in words is "ten million, twenty thousand, five hundred twenty".