| Base | Representation |
|---|---|
| bin | 11110101010100… |
| … | …01011111111100 |
| 3 | 122221000220000000 |
| 4 | 33111101133330 |
| 5 | 1011323004230 |
| 6 | 41305234300 |
| 7 | 6242314044 |
| oct | 1725213774 |
| 9 | 587026000 |
| 10 | 257234940 |
| 11 | 122225466 |
| 12 | 72192990 |
| 13 | 413a6831 |
| 14 | 26240724 |
| 15 | 178b2b60 |
| hex | f5517fc |
257234940 has 96 divisors (see below), whose sum is σ = 810304320. Its totient is φ = 68584320.
The previous prime is 257234933. The next prime is 257234947. The reversal of 257234940 is 49432752.
257234940 is a `hidden beast` number, since 2 + 572 + 3 + 49 + 40 = 666.
It is an interprime number because it is at equal distance from previous prime (257234933) and next prime (257234947).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 257234895 and 257234904.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (257234947) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40800 + ... + 46680.
It is an arithmetic number, because the mean of its divisors is an integer number (8440670).
Almost surely, 2257234940 is an apocalyptic number.
257234940 is a gapful number since it is divisible by the number (20) 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 257234940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405152160).
257234940 is an abundant number, since it is smaller than the sum of its proper divisors (553069380).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
257234940 is an equidigital number, since it uses as much as digits as its factorization.
257234940 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5911 (or 5891 counting only the distinct ones).
The product of its (nonzero) digits is 60480, while the sum is 36.
The square root of 257234940 is about 16038.5454452703. The cubic root of 257234940 is about 635.9797964390.
The spelling of 257234940 in words is "two hundred fifty-seven million, two hundred thirty-four thousand, nine hundred forty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •