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20646032 = 2411117307
BaseRepresentation
bin100111011000…
…0100010010000
31102211221000212
41032300202100
520241133112
62014303252
7340326341
oct116604220
942757025
1020646032
1110721740
126ab7b28
13437b4b4
142a560c8
151c2c522
hex13b0890

20646032 has 20 divisors (see below), whose sum is σ = 43638576. Its totient is φ = 9384480.

The previous prime is 20646029. The next prime is 20646049. The reversal of 20646032 is 23064602.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20645989 and 20646007.

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, 58478 + ... + 58829.

Almost surely, 220646032 is an apocalyptic number.

20646032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20646032 is an abundant number, since it is smaller than the sum of its proper divisors (22992544).

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

20646032 is a wasteful number, since it uses less digits than its factorization.

20646032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117326 (or 117320 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20646032 is about 4543.7904881277. The cubic root of 20646032 is about 274.3335132884. Note that the first 3 decimals are identical.

The spelling of 20646032 in words is "twenty million, six hundred forty-six thousand, thirty-two".

Divisors: 1 2 4 8 11 16 22 44 88 176 117307 234614 469228 938456 1290377 1876912 2580754 5161508 10323016 20646032