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20134160 = 245251677
BaseRepresentation
bin100110011001…
…1100100010000
31101212220212122
41030303210100
520123243120
61555313412
7333065114
oct114634420
941786778
1020134160
1110402102
1268ab868
13422c507
142961744
151b7aa25
hex1333910

20134160 has 20 divisors (see below), whose sum is σ = 46812108. Its totient is φ = 8053632.

The previous prime is 20134139. The next prime is 20134183. The reversal of 20134160 is 6143102.

It can be written as a sum of positive squares in 2 ways, for example, as 15241216 + 4892944 = 3904^2 + 2212^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125759 + ... + 125918.

Almost surely, 220134160 is an apocalyptic number.

20134160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134160 is an abundant number, since it is smaller than the sum of its proper divisors (26677948).

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

20134160 is a wasteful number, since it uses less digits than its factorization.

20134160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251690 (or 251684 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20134160 is about 4487.1104287726. The cubic root of 20134160 is about 272.0473533473.

Adding to 20134160 its reverse (6143102), we get a palindrome (26277262).

The spelling of 20134160 in words is "twenty million, one hundred thirty-four thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 251677 503354 1006708 1258385 2013416 2516770 4026832 5033540 10067080 20134160