Base | Representation |
---|---|
bin | 110001101001… |
… | …000000100001 |
3 | 220111010111220 |
4 | 301221000201 |
5 | 11312404100 |
6 | 1142525253 |
7 | 215415564 |
oct | 61510041 |
9 | 26433456 |
10 | 13013025 |
11 | 7388973 |
12 | 4436829 |
13 | 290811c |
14 | 1a2a4db |
15 | 1220aa0 |
hex | c69021 |
13013025 has 48 divisors (see below), whose sum is σ = 23093760. Its totient is φ = 6451200.
The previous prime is 13013023. The next prime is 13013027. The reversal of 13013025 is 52031031.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (13013023) and next prime (13013027).
It is not a de Polignac number, because 13013025 - 21 = 13013023 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a junction number, because it is equal to n+sod(n) for n = 13012995 and 13013013.
It is not an unprimeable number, because it can be changed into a prime (13013023) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67329 + ... + 67521.
It is an arithmetic number, because the mean of its divisors is an integer number (481120).
Almost surely, 213013025 is an apocalyptic number.
13013025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13013025 is a deficient number, since it is larger than the sum of its proper divisors (10080735).
13013025 is a wasteful number, since it uses less digits than its factorization.
13013025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 266 (or 261 counting only the distinct ones).
The product of its (nonzero) digits is 90, while the sum is 15.
The square root of 13013025 is about 3607.3570657754. The cubic root of 13013025 is about 235.2119711096.
Adding to 13013025 its reverse (52031031), we get a palindrome (65044056).
The spelling of 13013025 in words is "thirteen million, thirteen thousand, twenty-five".
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