20024801 has 4 divisors (see below), whose sum is σ = 20089092. Its totient is φ = 19960512.

The previous prime is 20024749. The next prime is 20024813. The reversal of 20024801 is 10842002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3904576 + 16120225 = 1976^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 20024801 - 2¹⁸ = 19762657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20024801.

It is not an unprimeable number, because it can be changed into a prime (20024821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31676 + ... + 32301.

It is an arithmetic number, because the mean of its divisors is an integer number (5022273).

Almost surely, 2^20024801 is an apocalyptic number.

It is an amenable number.

20024801 is a deficient number, since it is larger than the sum of its proper divisors (64291).

20024801 is an equidigital number, since it uses as much as digits as its factorization.

20024801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64290.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 20024801 is about 4474.9079320138. The cubic root of 20024801 is about 271.5539157655.

Adding to 20024801 its reverse (10842002), we get a palindrome (30866803).

The spelling of 20024801 in words is "twenty million, twenty-four thousand, eight hundred one".