20024513 has 8 divisors (see below), whose sum is σ = 21290688. Its totient is φ = 18791344.

The previous prime is 20024509. The next prime is 20024527. The reversal of 20024513 is 31542002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20024513 - 2² = 20024509 is a prime.

It is a super-2 number, since 2×20024513² = 801962241774338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20024491 and 20024500.

It is not an unprimeable number, because it can be changed into a prime (20024813) 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, 6995 + ... + 9432.

It is an arithmetic number, because the mean of its divisors is an integer number (2661336).

Almost surely, 2^20024513 is an apocalyptic number.

20024513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20024513 is a deficient number, since it is larger than the sum of its proper divisors (1266175).

20024513 is a wasteful number, since it uses less digits than its factorization.

20024513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16503.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20024513 is about 4474.8757524651. The cubic root of 20024513 is about 271.5526139149.

Adding to 20024513 its reverse (31542002), we get a palindrome (51566515).

The spelling of 20024513 in words is "twenty million, twenty-four thousand, five hundred thirteen".