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145045660 = 22525728219
BaseRepresentation
bin10001010010100…
…11100010011100
3101002221002020111
420221103202130
5244112430120
622220455404
73410603434
oct1051234234
9332832214
10145045660
1174968a51
12406aa564
1324085b46
14153992c4
15cb0175a
hex8a5389c

145045660 has 24 divisors (see below), whose sum is σ = 305791920. Its totient is φ = 57790464.

The previous prime is 145045657. The next prime is 145045673. The reversal of 145045660 is 66540541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8970 + ... + 19249.

It is an arithmetic number, because the mean of its divisors is an integer number (12741330).

Almost surely, 2145045660 is an apocalyptic number.

145045660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145045660 is an abundant number, since it is smaller than the sum of its proper divisors (160746260).

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

145045660 is a wasteful number, since it uses less digits than its factorization.

145045660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28485 (or 28483 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 145045660 is about 12043.4903578655. The cubic root of 145045660 is about 525.4139260189.

It can be divided in two parts, 14504 and 5660, that added together give a square (20164 = 1422).

The spelling of 145045660 in words is "one hundred forty-five million, forty-five thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 257 514 1028 1285 2570 5140 28219 56438 112876 141095 282190 564380 7252283 14504566 29009132 36261415 72522830 145045660