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145145260 = 22513558251
BaseRepresentation
bin10001010011010…
…11110110101100
3101010010010212101
420221223312230
5244124122020
622222544444
73411500011
oct1051536654
9333103771
10145145260
1174a26867
1240738124
13240bc290
14153c3708
15cb2100a
hex8a6bdac

145145260 has 24 divisors (see below), whose sum is σ = 328252176. Its totient is φ = 53592000.

The previous prime is 145145213. The next prime is 145145263. The reversal of 145145260 is 62541541.

It is not an unprimeable number, because it can be changed into a prime (145145263) 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, 278866 + ... + 279385.

It is an arithmetic number, because the mean of its divisors is an integer number (13677174).

Almost surely, 2145145260 is an apocalyptic number.

145145260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145145260 is an abundant number, since it is smaller than the sum of its proper divisors (183106916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145145260 is a wasteful number, since it uses less digits than its factorization.

145145260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558273 (or 558271 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 145145260 is about 12047.6246621481. The cubic root of 145145260 is about 525.5341623024.

The spelling of 145145260 in words is "one hundred forty-five million, one hundred forty-five thousand, two hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 558251 1116502 2233004 2791255 5582510 7257263 11165020 14514526 29029052 36286315 72572630 145145260