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145580979 = 31715591831
BaseRepresentation
bin10001010110101…
…10001110110011
3101010221021120010
420223112032303
5244232042404
622240150003
73415263225
oct1053261663
9333837503
10145580979
11751a4165
1240908303
13242126bb
1415498415
15cbaa189
hex8ad63b3

145580979 has 16 divisors (see below), whose sum is σ = 205770240. Its totient is φ = 91236480.

The previous prime is 145580971. The next prime is 145580993. The reversal of 145580979 is 979085541.

It is not a de Polignac number, because 145580979 - 23 = 145580971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145580971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78594 + ... + 80424.

It is an arithmetic number, because the mean of its divisors is an integer number (12860640).

Almost surely, 2145580979 is an apocalyptic number.

145580979 is a deficient number, since it is larger than the sum of its proper divisors (60189261).

145580979 is a wasteful number, since it uses less digits than its factorization.

145580979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410.

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 145580979 is about 12065.6943024428. The cubic root of 145580979 is about 526.0595129452.

The spelling of 145580979 in words is "one hundred forty-five million, five hundred eighty thousand, nine hundred seventy-nine".

Divisors: 1 3 17 51 1559 1831 4677 5493 26503 31127 79509 93381 2854529 8563587 48526993 145580979