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20235001 = 149913499
BaseRepresentation
bin100110100110…
…0001011111001
31102002001012111
41031030023321
520140010001
62001412321
7333665113
oct115141371
942061174
1020235001
1110470946
12693a0a1
134266397
14298a3b3
151b9a851
hex134c2f9

20235001 has 4 divisors (see below), whose sum is σ = 20250000. Its totient is φ = 20220004.

The previous prime is 20234993. The next prime is 20235013. The reversal of 20235001 is 10053202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20235001 - 23 = 20234993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20235031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5251 + ... + 8248.

It is an arithmetic number, because the mean of its divisors is an integer number (5062500).

Almost surely, 220235001 is an apocalyptic number.

It is an amenable number.

20235001 is a deficient number, since it is larger than the sum of its proper divisors (14999).

20235001 is a wasteful number, since it uses less digits than its factorization.

20235001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14998.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 20235001 is about 4498.3331357293. Note that the first 3 decimals coincide. The cubic root of 20235001 is about 272.5007760267.

Adding to 20235001 its reverse (10053202), we get a palindrome (30288203).

The spelling of 20235001 in words is "twenty million, two hundred thirty-five thousand, one".

Divisors: 1 1499 13499 20235001