Base | Representation |
---|---|
bin | 110111011011… |
… | …1011101000101 |
3 | 2000200112220201 |
4 | 1232313131011 |
5 | 24420003411 |
6 | 2514530501 |
7 | 502013503 |
oct | 156673505 |
9 | 60615821 |
10 | 29062981 |
11 | 154504a2 |
12 | 9896a31 |
13 | 603763c |
14 | 3c07673 |
15 | 28413c1 |
hex | 1bb7745 |
29062981 has 4 divisors (see below), whose sum is σ = 29087500. Its totient is φ = 29038464.
The previous prime is 29062939. The next prime is 29062991. The reversal of 29062981 is 18926092.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 11840481 + 17222500 = 3441^2 + 4150^2 .
It is a cyclic number.
It is not a de Polignac number, because 29062981 - 215 = 29030213 is a prime.
It is a super-2 number, since 2×290629812 = 1689313729212722, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 29062981.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (29062931) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10386 + ... + 12883.
It is an arithmetic number, because the mean of its divisors is an integer number (7271875).
Almost surely, 229062981 is an apocalyptic number.
It is an amenable number.
29062981 is a deficient number, since it is larger than the sum of its proper divisors (24519).
29062981 is a wasteful number, since it uses less digits than its factorization.
29062981 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 24518.
The product of its (nonzero) digits is 15552, while the sum is 37.
The square root of 29062981 is about 5391.0092747091. The cubic root of 29062981 is about 307.4539327733.
The spelling of 29062981 in words is "twenty-nine million, sixty-two thousand, nine hundred eighty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •