Base | Representation |
---|---|
bin | 10010110001010010… |
… | …010111001100101110 |
3 | 1221000120202222111211 |
4 | 102301102113030232 |
5 | 312233442000110 |
6 | 13131515305034 |
7 | 1312304204305 |
oct | 226122271456 |
9 | 57016688454 |
10 | 20154250030 |
11 | 8602604392 |
12 | 3aa574b17a |
13 | 1b92634145 |
14 | d9299943c |
15 | 7ce58998a |
hex | 4b149732e |
20154250030 has 32 divisors (see below), whose sum is σ = 36697160160. Its totient is φ = 7968739200.
The previous prime is 20154249971. The next prime is 20154250033. The reversal of 20154250030 is 3005245102.
It is a junction number, because it is equal to n+sod(n) for n = 20154249983 and 20154250010.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20154250033) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609072 + ... + 641308.
It is an arithmetic number, because the mean of its divisors is an integer number (1146786255).
Almost surely, 220154250030 is an apocalyptic number.
20154250030 is a deficient number, since it is larger than the sum of its proper divisors (16542910130).
20154250030 is a wasteful number, since it uses less digits than its factorization.
20154250030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 32964.
The product of its (nonzero) digits is 1200, while the sum is 22.
Adding to 20154250030 its reverse (3005245102), we get a palindrome (23159495132).
The spelling of 20154250030 in words is "twenty billion, one hundred fifty-four million, two hundred fifty thousand, thirty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.077 sec. • engine limits •