| Base | Representation |
|---|---|
| bin | 10010110011100… |
| … | …01000110011100 |
| 3 | 101222211111212000 |
| 4 | 21121301012130 |
| 5 | 310340442120 |
| 6 | 23353042300 |
| 7 | 3623564355 |
| oct | 1131610634 |
| 9 | 358744760 |
| 10 | 157749660 |
| 11 | 81055722 |
| 12 | 449b6390 |
| 13 | 268b33c3 |
| 14 | 16d44d2c |
| 15 | dcb0990 |
| hex | 967119c |
157749660 has 96 divisors (see below), whose sum is σ = 498926400. Its totient is φ = 41368320.
The previous prime is 157749643. The next prime is 157749667. The reversal of 157749660 is 66947751.
It is a happy number.
157749660 is a `hidden beast` number, since 157 + 7 + 496 + 6 + 0 = 666.
It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (157749667) 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, 30546 + ... + 35334.
It is an arithmetic number, because the mean of its divisors is an integer number (5197150).
Almost surely, 2157749660 is an apocalyptic number.
157749660 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 157749660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249463200).
157749660 is an abundant number, since it is smaller than the sum of its proper divisors (341176740).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
157749660 is a wasteful number, since it uses less digits than its factorization.
157749660 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4868 (or 4860 counting only the distinct ones).
The product of its (nonzero) digits is 317520, while the sum is 45.
The square root of 157749660 is about 12559.8431518869. The cubic root of 157749660 is about 540.3263459448.
The spelling of 157749660 in words is "one hundred fifty-seven million, seven hundred forty-nine thousand, six hundred sixty".
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