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6872480 = 25542953
BaseRepresentation
bin11010001101110110100000
3110221011021022
4122031312200
53224404410
6403145012
7112262246
oct32156640
913834238
106872480
11397443a
122375168
131568174
14cac796
1590b455
hex68dda0

6872480 has 24 divisors (see below), whose sum is σ = 16236612. Its totient is φ = 2748928.

The previous prime is 6872479. The next prime is 6872501. The reversal of 6872480 is 842786.

It can be written as a sum of positive squares in 2 ways, for example, as 6091024 + 781456 = 2468^2 + 884^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6872480.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21317 + ... + 21636.

Almost surely, 26872480 is an apocalyptic number.

It is an amenable number.

6872480 is an abundant number, since it is smaller than the sum of its proper divisors (9364132).

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

6872480 is a wasteful number, since it uses less digits than its factorization.

6872480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42968 (or 42960 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 6872480 is about 2621.5415312369. The cubic root of 6872480 is about 190.1243876166.

The spelling of 6872480 in words is "six million, eight hundred seventy-two thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 42953 85906 171812 214765 343624 429530 687248 859060 1374496 1718120 3436240 6872480