Search a number
-
+
2185297030 = 257291076501
BaseRepresentation
bin1000001001000000…
…1111110010000110
312122022000120222001
42002100033302012
513433414001110
61000502255514
7105103501240
oct20220176206
95568016861
102185297030
11a215a8004
1250ba2759a
1328a984287
1416a331090
15cbcb563a
hex8240fc86

2185297030 has 32 divisors (see below), whose sum is σ = 4650488640. Its totient is φ = 723408000.

The previous prime is 2185297019. The next prime is 2185297031. The reversal of 2185297030 is 307925812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185297031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536221 + ... + 540280.

It is an arithmetic number, because the mean of its divisors is an integer number (145327770).

Almost surely, 22185297030 is an apocalyptic number.

2185297030 is an abundant number, since it is smaller than the sum of its proper divisors (2465191610).

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

2185297030 is a wasteful number, since it uses less digits than its factorization.

2185297030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076544.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2185297030 is about 46747.1606624402. The cubic root of 2185297030 is about 1297.6876111460.

The spelling of 2185297030 in words is "two billion, one hundred eighty-five million, two hundred ninety-seven thousand, thirty".

Divisors: 1 2 5 7 10 14 29 35 58 70 145 203 290 406 1015 2030 1076501 2153002 5382505 7535507 10765010 15071014 31218529 37677535 62437058 75355070 156092645 218529703 312185290 437059406 1092648515 2185297030