Search a number
-
+
20310330148 = 222947712739
BaseRepresentation
bin10010111010100101…
…110000101100100100
31221102110110200011221
4102322211300230210
5313043421031043
613155212510124
71316210646343
oct227245605444
957373420157
1020310330148
118682719719
123b29a7b344
131bb8a81644
14da95c7b5a
157dd11a8ed
hex4ba970b24

20310330148 has 72 divisors (see below), whose sum is σ = 38138889600. Its totient is φ = 9448407360.

The previous prime is 20310330059. The next prime is 20310330149. The reversal of 20310330148 is 84103301302.

It is not an unprimeable number, because it can be changed into a prime (20310330149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27483163 + ... + 27483901.

It is an arithmetic number, because the mean of its divisors is an integer number (529706800).

Almost surely, 220310330148 is an apocalyptic number.

It is an amenable number.

20310330148 is a deficient number, since it is larger than the sum of its proper divisors (17828559452).

20310330148 is a wasteful number, since it uses less digits than its factorization.

20310330148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 20310330148 in words is "twenty billion, three hundred ten million, three hundred thirty thousand, one hundred forty-eight".

Divisors: 1 2 4 29 47 58 71 94 116 142 188 284 739 1363 1478 2059 2726 2956 3337 4118 5041 5452 6674 8236 10082 13348 20164 21431 34733 42862 52469 69466 85724 96773 104938 138932 146189 193546 209876 236927 292378 387092 473854 584756 947708 1007257 1521601 2014514 2466043 3043202 3725299 4029028 4932086 6086404 6870883 7450598 9864172 13741766 14901196 27483532 71515247 108033671 143030494 175089053 216067342 286060988 350178106 432134684 700356212 5077582537 10155165074 20310330148