20041520 has 40 divisors (see below), whose sum is σ = 46790160. Its totient is φ = 7983360.

The previous prime is 20041517. The next prime is 20041537. The reversal of 20041520 is 2514002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 20041495 and 20041504.

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, 29990 + ... + 30650.

It is an arithmetic number, because the mean of its divisors is an integer number (1169754).

Almost surely, 2^20041520 is an apocalyptic number.

20041520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20041520 is an abundant number, since it is smaller than the sum of its proper divisors (26748640).

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

20041520 is a wasteful number, since it uses less digits than its factorization.

20041520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20041520 is about 4476.7756253804. The cubic root of 20041520 is about 271.6294695246.

Adding to 20041520 its reverse (2514002), we get a palindrome (22555522).

The spelling of 20041520 in words is "twenty million, forty-one thousand, five hundred twenty".