[go: up one dir, main page]

Search a number
-
+
12872484 = 2232357569
BaseRepresentation
bin110001000110…
…101100100100
3220012222201200
4301012230210
511243404414
61135522500
7214262052
oct61065444
926188650
1012872484
1172a2319
124389430
132889171
1419d11d2
1511e4109
hexc46b24

12872484 has 18 divisors (see below), whose sum is σ = 32538870. Its totient is φ = 4290816.

The previous prime is 12872473. The next prime is 12872507. The reversal of 12872484 is 48427821.

It can be written as a sum of positive squares in only one way, i.e., 7452900 + 5419584 = 2730^2 + 2328^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 357569 = 12872484 / (1 + 2 + 8 + 7 + 2 + 4 + 8 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178749 + ... + 178820.

It is an arithmetic number, because the mean of its divisors is an integer number (1807715).

Almost surely, 212872484 is an apocalyptic number.

It is an amenable number.

12872484 is an abundant number, since it is smaller than the sum of its proper divisors (19666386).

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

12872484 is a wasteful number, since it uses less digits than its factorization.

12872484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357579 (or 357574 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 12872484 is about 3587.8244104192. The cubic root of 12872484 is about 234.3621392410.

The spelling of 12872484 in words is "twelve million, eight hundred seventy-two thousand, four hundred eighty-four".

Divisors: 1 2 3 4 6 9 12 18 36 357569 715138 1072707 1430276 2145414 3218121 4290828 6436242 12872484