Base | Representation |
---|---|
bin | 111001100011… |
… | …1100101101010 |
3 | 2002210011221110 |
4 | 1303013211222 |
5 | 30211141032 |
6 | 2554451150 |
7 | 514335315 |
oct | 163074552 |
9 | 62704843 |
10 | 30177642 |
11 | 16041a00 |
12 | a133ab6 |
13 | 6337ac1 |
14 | 401797c |
15 | 29b17cc |
hex | 1cc796a |
30177642 has 48 divisors (see below), whose sum is σ = 66993696. Its totient is φ = 9055200.
The previous prime is 30177629. The next prime is 30177647. The reversal of 30177642 is 24677103.
It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.
It is not an unprimeable number, because it can be changed into a prime (30177647) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142917 + ... + 143127.
It is an arithmetic number, because the mean of its divisors is an integer number (1395702).
Almost surely, 230177642 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30177642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33496848).
30177642 is an abundant number, since it is smaller than the sum of its proper divisors (36816054).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30177642 is a wasteful number, since it uses less digits than its factorization.
30177642 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 435 (or 424 counting only the distinct ones).
The product of its (nonzero) digits is 7056, while the sum is 30.
The square root of 30177642 is about 5493.4180616443. The cubic root of 30177642 is about 311.3353495715.
The spelling of 30177642 in words is "thirty million, one hundred seventy-seven thousand, six hundred forty-two".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •