Search a number
-
+
20810048 = 26746451
BaseRepresentation
bin100111101100…
…0100101000000
31110011021000112
41033120211000
520311410143
62022010452
7341611460
oct117304500
943137015
1020810048
1110823996
126b76a28
13440804c
142a99ba0
151c60e18
hex13d8940

20810048 has 28 divisors (see below), whose sum is σ = 47195232. Its totient is φ = 8918400.

The previous prime is 20810033. The next prime is 20810063. The reversal of 20810048 is 84001802.

It is an interprime number because it is at equal distance from previous prime (20810033) and next prime (20810063).

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

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, 22778 + ... + 23673.

It is an arithmetic number, because the mean of its divisors is an integer number (1685544).

Almost surely, 220810048 is an apocalyptic number.

20810048 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20810048 is an abundant number, since it is smaller than the sum of its proper divisors (26385184).

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

20810048 is an equidigital number, since it uses as much as digits as its factorization.

20810048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46470 (or 46460 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 20810048 is about 4561.8031522634. The cubic root of 20810048 is about 275.0580505550.

The spelling of 20810048 in words is "twenty million, eight hundred ten thousand, forty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 224 448 46451 92902 185804 325157 371608 650314 743216 1300628 1486432 2601256 2972864 5202512 10405024 20810048