| Base | Representation |
|---|---|
| bin | 10001010011100… |
| … | …11100100001000 |
| 3 | 101010011202012000 |
| 4 | 20221303210020 |
| 5 | 244131124330 |
| 6 | 22223351000 |
| 7 | 3411661044 |
| oct | 1051634410 |
| 9 | 333152160 |
| 10 | 145176840 |
| 11 | 74a48566 |
| 12 | 40752460 |
| 13 | 24100773 |
| 14 | 153d1024 |
| 15 | cb2a560 |
| hex | 8a73908 |
145176840 has 128 divisors (see below), whose sum is σ = 486864000. Its totient is φ = 38479104.
The previous prime is 145176839. The next prime is 145176841. The reversal of 145176840 is 48671541.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (145176839) and next prime (145176841).
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 = 145176795 and 145176804.
It is not an unprimeable number, because it can be changed into a prime (145176841) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247027 + ... + 247613.
It is an arithmetic number, because the mean of its divisors is an integer number (3803625).
Almost surely, 2145176840 is an apocalyptic number.
145176840 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 145176840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243432000).
145176840 is an abundant number, since it is smaller than the sum of its proper divisors (341687160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
145176840 is a wasteful number, since it uses less digits than its factorization.
145176840 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 836 (or 826 counting only the distinct ones).
The product of its (nonzero) digits is 26880, while the sum is 36.
The square root of 145176840 is about 12048.9352226659. The cubic root of 145176840 is about 525.5722739279.
The spelling of 145176840 in words is "one hundred forty-five million, one hundred seventy-six thousand, eight hundred forty".
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