| Base | Representation |
|---|---|
| bin | 10001010100111… |
| … | …00101011011000 |
| 3 | 101010111022012001 |
| 4 | 20222130223120 |
| 5 | 244202021430 |
| 6 | 22231130344 |
| 7 | 3413262025 |
| oct | 1052345330 |
| 9 | 333438161 |
| 10 | 145345240 |
| 11 | 75053037 |
| 12 | 408139b4 |
| 13 | 2415c301 |
| 14 | 1543654c |
| 15 | cb603ca |
| hex | 8a9cad8 |
145345240 has 64 divisors (see below), whose sum is σ = 348248160. Its totient is φ = 54405120.
The previous prime is 145345217. The next prime is 145345243. The reversal of 145345240 is 42543541.
It is a super-2 number, since 2×1453452402 = 42250477581315200, which contains 22 as substring.
It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.
It is a junction number, because it is equal to n+sod(n) for n = 145345199 and 145345208.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (145345243) 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 15 ways as a sum of consecutive naturals, for example, 142974 + ... + 143986.
Almost surely, 2145345240 is an apocalyptic number.
145345240 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 145345240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174124080).
145345240 is an abundant number, since it is smaller than the sum of its proper divisors (202902920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
145345240 is a wasteful number, since it uses less digits than its factorization.
145345240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1252 (or 1248 counting only the distinct ones).
The product of its (nonzero) digits is 9600, while the sum is 28.
The square root of 145345240 is about 12055.9213666978. The cubic root of 145345240 is about 525.7754104877.
Adding to 145345240 its reverse (42543541), we get a palindrome (187888781).
The spelling of 145345240 in words is "one hundred forty-five million, three hundred forty-five thousand, two hundred forty".
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