Base | Representation |
---|---|
bin | 10111010001010111… |
… | …01100011011100111 |
3 | 1012020201002212101120 |
4 | 23220223230123213 |
5 | 201041341443022 |
6 | 5423423225023 |
7 | 621414502521 |
oct | 135053543347 |
9 | 35221085346 |
10 | 12493702887 |
11 | 5331407996 |
12 | 2508148173 |
13 | 1241523603 |
14 | 867414a11 |
15 | 4d1c92d5c |
hex | 2e8aec6e7 |
12493702887 has 16 divisors (see below), whose sum is σ = 16757176320. Its totient is φ = 8279744000.
The previous prime is 12493702853. The next prime is 12493702891. The reversal of 12493702887 is 78820739421.
It is a cyclic number.
It is not a de Polignac number, because 12493702887 - 211 = 12493700839 is a prime.
It is a super-2 number, since 2×124937028872 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12493702387) 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, 910564 + ... + 924182.
It is an arithmetic number, because the mean of its divisors is an integer number (1047323520).
Almost surely, 212493702887 is an apocalyptic number.
12493702887 is a deficient number, since it is larger than the sum of its proper divisors (4263473433).
12493702887 is a wasteful number, since it uses less digits than its factorization.
12493702887 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15414.
The product of its (nonzero) digits is 1354752, while the sum is 51.
The spelling of 12493702887 in words is "twelve billion, four hundred ninety-three million, seven hundred two thousand, eight hundred eighty-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •