Search a number
-
+
12305189372 = 2272391838791
BaseRepresentation
bin10110111010111001…
…00100100111111100
31011202120101101110112
423131130210213330
5200200112024442
65353010525152
7613635245450
oct133534444774
934676341415
1012305189372
115244a5a9a3
122474b967b8
13121145b658
1484a382660
154c0457082
hex2dd7249fc

12305189372 has 24 divisors (see below), whose sum is σ = 24713364480. Its totient is φ = 5251584240.

The previous prime is 12305189371. The next prime is 12305189387. The reversal of 12305189372 is 27398150321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12305189371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912704 + ... + 926087.

It is an arithmetic number, because the mean of its divisors is an integer number (1029723520).

Almost surely, 212305189372 is an apocalyptic number.

It is an amenable number.

12305189372 is an abundant number, since it is smaller than the sum of its proper divisors (12408175108).

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

12305189372 is a wasteful number, since it uses less digits than its factorization.

12305189372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839041 (or 1839039 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 12305189372 in words is "twelve billion, three hundred five million, one hundred eighty-nine thousand, three hundred seventy-two".

Divisors: 1 2 4 7 14 28 239 478 956 1673 3346 6692 1838791 3677582 7355164 12871537 25743074 51486148 439471049 878942098 1757884196 3076297343 6152594686 12305189372