Base | Representation |
---|---|
bin | 11100000101001001… |
… | …111001101001010000 |
3 | 2212211021220022212210 |
4 | 130011021321221100 |
5 | 443222210040220 |
6 | 21503513552120 |
7 | 2115114263262 |
oct | 340511715120 |
9 | 85737808783 |
10 | 30151252560 |
11 | 11872661350 |
12 | 5a15715640 |
13 | 2ac6812160 |
14 | 166057bb32 |
15 | bb70546e0 |
hex | 705279a50 |
30151252560 has 320 divisors, whose sum is σ = 112368807936. Its totient is φ = 6589900800.
The previous prime is 30151252493. The next prime is 30151252567. The reversal of 30151252560 is 6525215103.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (30).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30151252567) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1465545 + ... + 1485975.
Almost surely, 230151252560 is an apocalyptic number.
30151252560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30151252560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56184403968).
30151252560 is an abundant number, since it is smaller than the sum of its proper divisors (82217555376).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30151252560 is a wasteful number, since it uses less digits than its factorization.
30151252560 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20514 (or 20508 counting only the distinct ones).
The product of its (nonzero) digits is 9000, while the sum is 30.
Adding to 30151252560 its reverse (6525215103), we get a palindrome (36676467663).
The spelling of 30151252560 in words is "thirty billion, one hundred fifty-one million, two hundred fifty-two thousand, five hundred sixty".
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