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20301960 = 2335724169
BaseRepresentation
bin100110101110…
…0100010001000
31102012110001110
41031130202020
520144130320
62003050320
7334364250
oct115344210
942173043
1020301960
1110507188
1269709a0
13428a9c3
1429a6960
151bb05e0
hex135c888

20301960 has 64 divisors (see below), whose sum is σ = 69609600. Its totient is φ = 4640256.

The previous prime is 20301949. The next prime is 20301991. The reversal of 20301960 is 6910302.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11245 + ... + 12924.

It is an arithmetic number, because the mean of its divisors is an integer number (1087650).

Almost surely, 220301960 is an apocalyptic number.

20301960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20301960 is an abundant number, since it is smaller than the sum of its proper divisors (49307640).

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

20301960 is a wasteful number, since it uses less digits than its factorization.

20301960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24190 (or 24186 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 20301960 is about 4505.7696345907. The cubic root of 20301960 is about 272.8010196526.

The spelling of 20301960 in words is "twenty million, three hundred one thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 840 24169 48338 72507 96676 120845 145014 169183 193352 241690 290028 338366 362535 483380 507549 580056 676732 725070 845915 966760 1015098 1353464 1450140 1691830 2030196 2537745 2900280 3383660 4060392 5075490 6767320 10150980 20301960