20141520 has 160 divisors (see below), whose sum is σ = 75233280. Its totient is φ = 4354560.

The previous prime is 20141509. The next prime is 20141543. The reversal of 20141520 is 2514102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20141520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31605 + ... + 32235.

It is an arithmetic number, because the mean of its divisors is an integer number (470208).

Almost surely, 2^20141520 is an apocalyptic number.

20141520 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 20141520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37616640).

20141520 is an abundant number, since it is smaller than the sum of its proper divisors (55091760).

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

20141520 is a wasteful number, since it uses less digits than its factorization.

20141520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20141520 is about 4487.9304807450. The cubic root of 20141520 is about 272.0804980890.

Adding to 20141520 its reverse (2514102), we get a palindrome (22655622).

The spelling of 20141520 in words is "twenty million, one hundred forty-one thousand, five hundred twenty".