20240001 has 12 divisors (see below), whose sum is σ = 29367312. Its totient is φ = 13432536.

The previous prime is 20239991. The next prime is 20240021. The reversal of 20240001 is 10004202.

It is not a de Polignac number, because 20240001 - 2¹⁴ = 20223617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20240021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2911 + ... + 6996.

It is an arithmetic number, because the mean of its divisors is an integer number (2447276).

Almost surely, 2^20240001 is an apocalyptic number.

It is an amenable number.

20240001 is a deficient number, since it is larger than the sum of its proper divisors (9127311).

20240001 is a wasteful number, since it uses less digits than its factorization.

20240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140 (or 10137 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 20240001 is about 4498.8888628194. Note that the first 4 decimals coincide. The cubic root of 20240001 is about 272.5232188503.

Adding to 20240001 its reverse (10004202), we get a palindrome (30244203).

The spelling of 20240001 in words is "twenty million, two hundred forty thousand, one".