Base | Representation |
---|---|
bin | 111011100110… |
… | …101101101000 |
3 | 1002101211120002 |
4 | 323212231220 |
5 | 13000000224 |
6 | 1314522132 |
7 | 246545060 |
oct | 73465550 |
9 | 32354502 |
10 | 15625064 |
11 | 8902384 |
12 | 5296348 |
13 | 3311000 |
14 | 210a3a0 |
15 | 15899ae |
hex | ee6b68 |
15625064 has 64 divisors (see below), whose sum is σ = 36556800. Its totient is φ = 6132672.
The previous prime is 15625061. The next prime is 15625067. The reversal of 15625064 is 46052651.
It is an interprime number because it is at equal distance from previous prime (15625061) and next prime (15625067).
It is a sliding number, since 15625064 = 64 + 15625000 and 1/64 + 1/15625000 = 0.015625064.
It is a plaindrome in base 15.
It is a nialpdrome in base 13.
It is a zygodrome in base 13.
It is not an unprimeable number, because it can be changed into a prime (15625061) 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, 122969 + ... + 123095.
It is an arithmetic number, because the mean of its divisors is an integer number (571200).
Almost surely, 215625064 is an apocalyptic number.
15625064 is a gapful number since it is divisible by the number (14) 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 15625064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18278400).
15625064 is an abundant number, since it is smaller than the sum of its proper divisors (20931736).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15625064 is a wasteful number, since it uses less digits than its factorization.
15625064 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 179 (or 149 counting only the distinct ones).
The product of its (nonzero) digits is 7200, while the sum is 29.
The square root of 15625064 is about 3952.8551706330. The cubic root of 15625064 is about 250.0003413329. Note that the first 3 decimals are identical.
It can be divided in two parts, 156250 and 64, that multiplied together give a 7-th power (10000000 = 107).
The spelling of 15625064 in words is "fifteen million, six hundred twenty-five thousand, sixty-four".
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