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145779284 = 22717306259
BaseRepresentation
bin10001011000001…
…10101001010100
3101011022100120202
420230012221110
5244304414114
622244320032
73420050330
oct1054065124
9334270522
10145779284
117531a152
12409a3018
1324281a41
141550a7c0
15cbe8cde
hex8b06a54

145779284 has 24 divisors (see below), whose sum is σ = 308710080. Its totient is φ = 58801536.

The previous prime is 145779281. The next prime is 145779307. The reversal of 145779284 is 482977541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145779281) 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 7 ways as a sum of consecutive naturals, for example, 152654 + ... + 153605.

It is an arithmetic number, because the mean of its divisors is an integer number (12862920).

Almost surely, 2145779284 is an apocalyptic number.

145779284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145779284 is an abundant number, since it is smaller than the sum of its proper divisors (162930796).

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

145779284 is a wasteful number, since it uses less digits than its factorization.

145779284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306287 (or 306285 counting only the distinct ones).

The product of its digits is 564480, while the sum is 47.

The square root of 145779284 is about 12073.9092260957. The cubic root of 145779284 is about 526.2982641456.

The spelling of 145779284 in words is "one hundred forty-five million, seven hundred seventy-nine thousand, two hundred eighty-four".

Divisors: 1 2 4 7 14 17 28 34 68 119 238 476 306259 612518 1225036 2143813 4287626 5206403 8575252 10412806 20825612 36444821 72889642 145779284