Base | Representation |
---|---|
bin | 111010000010… |
… | …1011101001010 |
3 | 2010021001112221 |
4 | 1310011131022 |
5 | 30242243200 |
6 | 3004124254 |
7 | 516442156 |
oct | 164053512 |
9 | 63231487 |
10 | 30431050 |
11 | 161a5331 |
12 | a23668a |
13 | 63c6250 |
14 | 4082066 |
15 | 2a1191a |
hex | 1d0574a |
30431050 has 24 divisors (see below), whose sum is σ = 60957036. Its totient is φ = 11235840.
The previous prime is 30431021. The next prime is 30431059. The reversal of 30431050 is 5013403.
It can be written as a sum of positive squares in 6 ways, for example, as 9114361 + 21316689 = 3019^2 + 4617^2 .
It is not an unprimeable number, because it can be changed into a prime (30431059) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22759 + ... + 24058.
Almost surely, 230431050 is an apocalyptic number.
30431050 is an abundant number, since it is smaller than the sum of its proper divisors (30525986).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30431050 is a wasteful number, since it uses less digits than its factorization.
30431050 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 46842 (or 46837 counting only the distinct ones).
The product of its (nonzero) digits is 180, while the sum is 16.
The square root of 30431050 is about 5516.4345369088. The cubic root of 30431050 is about 312.2043710862.
Adding to 30431050 its reverse (5013403), we get a palindrome (35444453).
The spelling of 30431050 in words is "thirty million, four hundred thirty-one thousand, fifty".
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