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20732 = 227173
BaseRepresentation
bin101000011111100
31001102212
411003330
51130412
6235552
7114305
oct50374
931385
1020732
1114638
12bbb8
13958a
1477ac
156222
hex50fc

20732 has 12 divisors (see below), whose sum is σ = 37296. Its totient is φ = 10080.

The previous prime is 20731. The next prime is 20743. The reversal of 20732 is 23702.

It is a plaindrome in base 14.

It is a nialpdrome in base 12 and base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 20732.

It is not an unprimeable number, because it can be changed into a prime (20731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248 + ... + 320.

It is an arithmetic number, because the mean of its divisors is an integer number (3108).

220732 is an apocalyptic number.

It is an amenable number.

20732 is a deficient number, since it is larger than the sum of its proper divisors (16564).

20732 is a wasteful number, since it uses less digits than its factorization.

20732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 20732 is about 143.9861104413. The cubic root of 20732 is about 27.4713751734.

The spelling of 20732 in words is "twenty thousand, seven hundred thirty-two".

Divisors: 1 2 4 71 73 142 146 284 292 5183 10366 20732