Search a number
-
+
2385568690 = 251753264769
BaseRepresentation
bin1000111000110000…
…1110001110110010
320011020212110000221
42032030032032302
514341201144230
61032415003254
7113054666521
oct21614161662
96136773027
102385568690
11101465607a
12566b0952a
132c030510b
14188b844b8
15de67527a
hex8e30e3b2

2385568690 has 32 divisors (see below), whose sum is σ = 4632415920. Its totient is φ = 881147904.

The previous prime is 2385568687. The next prime is 2385568709. The reversal of 2385568690 is 968655832.

It can be written as a sum of positive squares in 8 ways, for example, as 2204208601 + 181360089 = 46949^2 + 13467^2 .

It is a super-2 number, since 2×23855686902 = 11381875949416632200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123375 + ... + 141394.

Almost surely, 22385568690 is an apocalyptic number.

2385568690 is a deficient number, since it is larger than the sum of its proper divisors (2246847230).

2385568690 is a wasteful number, since it uses less digits than its factorization.

2385568690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264846.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The square root of 2385568690 is about 48842.2838327611. The cubic root of 2385568690 is about 1336.1769493385.

The spelling of 2385568690 in words is "two billion, three hundred eighty-five million, five hundred sixty-eight thousand, six hundred ninety".

Divisors: 1 2 5 10 17 34 53 85 106 170 265 530 901 1802 4505 9010 264769 529538 1323845 2647690 4501073 9002146 14032757 22505365 28065514 45010730 70163785 140327570 238556869 477113738 1192784345 2385568690