Search a number
-
+
20302123010 = 25131719483499
BaseRepresentation
bin10010111010000110…
…011101000000000010
31221101220000201002212
4102322012131000002
5313034320414020
613154320542122
71316051125001
oct227206350002
957356021085
1020302123010
118679023564
123b27181942
131bb7169b50
14da848cc38
157dc548cc5
hex4ba19d002

20302123010 has 64 divisors (see below), whose sum is σ = 43863120000. Its totient is φ = 6683876352.

The previous prime is 20302123001. The next prime is 20302123013. The reversal of 20302123010 is 1032120302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20302123013) 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 31 ways as a sum of consecutive naturals, for example, 199760 + ... + 283739.

It is an arithmetic number, because the mean of its divisors is an integer number (685361250).

Almost surely, 220302123010 is an apocalyptic number.

20302123010 is an abundant number, since it is smaller than the sum of its proper divisors (23560996990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20302123010 is a wasteful number, since it uses less digits than its factorization.

20302123010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483555.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20302123010 its reverse (1032120302), we get a palindrome (21334243312).

The spelling of 20302123010 in words is "twenty billion, three hundred two million, one hundred twenty-three thousand, ten".

Divisors: 1 2 5 10 13 17 19 26 34 38 65 85 95 130 170 190 221 247 323 442 494 646 1105 1235 1615 2210 2470 3230 4199 8398 20995 41990 483499 966998 2417495 4834990 6285487 8219483 9186481 12570974 16438966 18372962 31427435 41097415 45932405 62854870 82194830 91864810 106853279 119424253 156170177 213706558 238848506 312340354 534266395 597121265 780850885 1068532790 1194242530 1561701770 2030212301 4060424602 10151061505 20302123010