Base | Representation |
---|---|
bin | 100100010101010001… |
… | …0001111110100010111 |
3 | 21110101120002200212011 |
4 | 1020222202033310113 |
5 | 2234242344011322 |
6 | 55502052205051 |
7 | 5431324554520 |
oct | 1105242176427 |
9 | 243346080764 |
10 | 78023032087 |
11 | 300a8a70900 |
12 | 13155909787 |
13 | 7485693010 |
14 | 3ac2397847 |
15 | 2069b5a677 |
hex | 122a88fd17 |
78023032087 has 48 divisors (see below), whose sum is σ = 111107476480. Its totient is φ = 53166611520.
The previous prime is 78023032081. The next prime is 78023032097.
78023032087 is nontrivially palindromic in base 10.
It is not a de Polignac number, because 78023032087 - 215 = 78022999319 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (78023032081) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22738 + ... + 395680.
Almost surely, 278023032087 is an apocalyptic number.
78023032087 is a gapful number since it is divisible by the number (77) formed by its first and last digit.
78023032087 is a deficient number, since it is larger than the sum of its proper divisors (33084444393).
78023032087 is a wasteful number, since it uses less digits than its factorization.
78023032087 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 373004 (or 372993 counting only the distinct ones).
The product of its (nonzero) digits is 112896, while the sum is 40.
The spelling of 78023032087 in words is "seventy-eight billion, twenty-three million, thirty-two thousand, eighty-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •