Base | Representation |
---|---|
bin | 111010010100… |
… | …0100010000000 |
3 | 2010112100122001 |
4 | 1310220202000 |
5 | 30311342340 |
6 | 3011153344 |
7 | 520611061 |
oct | 164504200 |
9 | 63470561 |
10 | 30574720 |
11 | 16293270 |
12 | a2a5854 |
13 | 6446767 |
14 | 40bc568 |
15 | 2a3e29a |
hex | 1d28880 |
30574720 has 128 divisors (see below), whose sum is σ = 82399680. Its totient is φ = 10752000.
The previous prime is 30574717. The next prime is 30574723. The reversal of 30574720 is 2747503.
It is an interprime number because it is at equal distance from previous prime (30574717) and next prime (30574723).
It is a tau number, because it is divible by the number of its divisors (128).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30574723) 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, 302670 + ... + 302770.
Almost surely, 230574720 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30574720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41199840).
30574720 is an abundant number, since it is smaller than the sum of its proper divisors (51824960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30574720 is a wasteful number, since it uses less digits than its factorization.
30574720 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 174 (or 162 counting only the distinct ones).
The product of its (nonzero) digits is 5880, while the sum is 28.
The square root of 30574720 is about 5529.4412014235. The cubic root of 30574720 is about 312.6949226579.
It can be divided in two parts, 3057 and 4720, that added together give a palindrome (7777).
The spelling of 30574720 in words is "thirty million, five hundred seventy-four thousand, seven hundred twenty".
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