Search a number
-
+
12486580 = 225624329
BaseRepresentation
bin101111101000…
…011110110100
3212111101100221
4233220132310
511144032310
61123344124
7211064011
oct57503664
925441327
1012486580
117059397
124222044
132782612
141930708
151169ada
hexbe87b4

12486580 has 12 divisors (see below), whose sum is σ = 26221860. Its totient is φ = 4994624.

The previous prime is 12486571. The next prime is 12486601. The reversal of 12486580 is 8568421.

It can be written as a sum of positive squares in 2 ways, for example, as 5788836 + 6697744 = 2406^2 + 2588^2 .

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, 312145 + ... + 312184.

It is an arithmetic number, because the mean of its divisors is an integer number (2185155).

Almost surely, 212486580 is an apocalyptic number.

12486580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12486580 is an abundant number, since it is smaller than the sum of its proper divisors (13735280).

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

12486580 is a wasteful number, since it uses less digits than its factorization.

12486580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624338 (or 624336 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 12486580 is about 3533.6355216689. The cubic root of 12486580 is about 231.9963584446.

The spelling of 12486580 in words is "twelve million, four hundred eighty-six thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 624329 1248658 2497316 3121645 6243290 12486580