20241520 has 40 divisors (see below), whose sum is σ = 50684256. Its totient is φ = 7473408.

The previous prime is 20241493. The next prime is 20241523. The reversal of 20241520 is 2514202.

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

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20241494 and 20241503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20241523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8692 + ... + 10771.

Almost surely, 2^20241520 is an apocalyptic number.

20241520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20241520 is an abundant number, since it is smaller than the sum of its proper divisors (30442736).

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

20241520 is a wasteful number, since it uses less digits than its factorization.

20241520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19489 (or 19483 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20241520 is about 4499.0576791146. The cubic root of 20241520 is about 272.5300362481.

Adding to 20241520 its reverse (2514202), we get a palindrome (22755722).

The spelling of 20241520 in words is "twenty million, two hundred forty-one thousand, five hundred twenty".