| Base | Representation |
|---|---|
| bin | 100100100011011… |
| … | …0100101101010000 |
| 3 | 10011110220221201010 |
| 4 | 1021012310231100 |
| 5 | 10002442304040 |
| 6 | 321412410520 |
| 7 | 42252203103 |
| oct | 11106645520 |
| 9 | 3143827633 |
| 10 | 1226525520 |
| 11 | 57a383860 |
| 12 | 2a2916a40 |
| 13 | 167150b5c |
| 14 | b8c7673a |
| 15 | 72a29e80 |
| hex | 491b4b50 |
1226525520 has 160 divisors (see below), whose sum is σ = 4392040320. Its totient is φ = 279838720.
The previous prime is 1226525513. The next prime is 1226525527. The reversal of 1226525520 is 255256221.
It is an interprime number because it is at equal distance from previous prime (1226525513) and next prime (1226525527).
It is a super-2 number, since 2×12265255202 = 3008729702422540800, which contains 22 as substring.
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 (1226525527) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31216 + ... + 58544.
It is an arithmetic number, because the mean of its divisors is an integer number (27450252).
Almost surely, 21226525520 is an apocalyptic number.
1226525520 is a gapful number since it is divisible by the number (10) 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 1226525520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196020160).
1226525520 is an abundant number, since it is smaller than the sum of its proper divisors (3165514800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1226525520 is a wasteful number, since it uses less digits than its factorization.
1226525520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 27373 (or 27367 counting only the distinct ones).
The product of its (nonzero) digits is 12000, while the sum is 30.
The square root of 1226525520 is about 35021.7863622060. The cubic root of 1226525520 is about 1070.4314561284.
The spelling of 1226525520 in words is "one billion, two hundred twenty-six million, five hundred twenty-five thousand, five hundred twenty".
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