Base | Representation |
---|---|
bin | 101101010011110… |
… | …0101011011101100 |
3 | 10220221202120201110 |
4 | 1122213211123230 |
5 | 11103200421010 |
6 | 410505512020 |
7 | 52450363266 |
oct | 13247453354 |
9 | 3827676643 |
10 | 1520326380 |
11 | 710203791 |
12 | 3651a2610 |
13 | 1b2c8b111 |
14 | 105cb4b36 |
15 | 8d712120 |
hex | 5a9e56ec |
1520326380 has 24 divisors (see below), whose sum is σ = 4256914032. Its totient is φ = 405420352.
The previous prime is 1520326373. The next prime is 1520326387. The reversal of 1520326380 is 836230251.
It is an interprime number because it is at equal distance from previous prime (1520326373) and next prime (1520326387).
It is a super-2 number, since 2×15203263802 = 4622784603447808800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (30).
It is not an unprimeable number, because it can be changed into a prime (1520326387) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12669327 + ... + 12669446.
It is an arithmetic number, because the mean of its divisors is an integer number (177371418).
Almost surely, 21520326380 is an apocalyptic number.
1520326380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
1520326380 is an abundant number, since it is smaller than the sum of its proper divisors (2736587652).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1520326380 is a wasteful number, since it uses less digits than its factorization.
1520326380 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 25338785 (or 25338783 counting only the distinct ones).
The product of its (nonzero) digits is 8640, while the sum is 30.
The square root of 1520326380 is about 38991.3628897478. The cubic root of 1520326380 is about 1149.8617048568.
The spelling of 1520326380 in words is "one billion, five hundred twenty million, three hundred twenty-six thousand, three hundred eighty".
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