Base | Representation |
---|---|
bin | 11100011011110011… |
… | …110100111010000000 |
3 | 2220210210002212111200 |
4 | 130123303310322000 |
5 | 1000012010420302 |
6 | 22005332341200 |
7 | 2130411060516 |
oct | 343363647200 |
9 | 86723085450 |
10 | 30531341952 |
11 | 11a48168111 |
12 | 5b00a74800 |
13 | 2b574a1c17 |
14 | 1698c3c4b6 |
15 | bda5d381c |
hex | 71bcf4e80 |
30531341952 has 48 divisors (see below), whose sum is σ = 87857120130. Its totient is φ = 10177113600.
The previous prime is 30531341941. The next prime is 30531341959. The reversal of 30531341952 is 25914313503.
30531341952 is a `hidden beast` number, since 3 + 0 + 531 + 34 + 1 + 95 + 2 = 666.
It can be written as a sum of positive squares in only one way, i.e., 22349054016 + 8182287936 = 149496^2 + 90456^2 .
It is a tau number, because it is divible by the number of its divisors (48).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (30531341959) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13250299 + ... + 13252602.
Almost surely, 230531341952 is an apocalyptic number.
30531341952 is a gapful number since it is divisible by the number (32) formed by its first and last digit.
It is an amenable number.
30531341952 is an abundant number, since it is smaller than the sum of its proper divisors (57325778178).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30531341952 is a wasteful number, since it uses less digits than its factorization.
30531341952 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26502921 (or 26502906 counting only the distinct ones).
The product of its (nonzero) digits is 48600, while the sum is 36.
The spelling of 30531341952 in words is "thirty billion, five hundred thirty-one million, three hundred forty-one thousand, nine hundred fifty-two".
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