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630680260 = 225719512309
BaseRepresentation
bin100101100101110…
…110101011000100
31121221201212200011
4211211312223010
52242423232020
6142325400004
721425456650
oct4545665304
91557655604
10630680260
112a4003461
12157269004
13a087b3b2
145da91a60
153a57d35a
hex25976ac4

630680260 has 48 divisors (see below), whose sum is σ = 1515064320. Its totient is φ = 216028800.

The previous prime is 630680257. The next prime is 630680261. The reversal of 630680260 is 62086036.

630680260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (630680261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271986 + ... + 274294.

It is an arithmetic number, because the mean of its divisors is an integer number (31563840).

Almost surely, 2630680260 is an apocalyptic number.

It is an amenable number.

630680260 is an abundant number, since it is smaller than the sum of its proper divisors (884384060).

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

630680260 is a wasteful number, since it uses less digits than its factorization.

630680260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276 (or 4274 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 630680260 is about 25113.3482435138. The cubic root of 630680260 is about 857.5703280214.

The spelling of 630680260 in words is "six hundred thirty million, six hundred eighty thousand, two hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1951 2309 3902 4618 7804 9236 9755 11545 13657 16163 19510 23090 27314 32326 39020 46180 54628 64652 68285 80815 136570 161630 273140 323260 4504859 9009718 18019436 22524295 31534013 45048590 63068026 90097180 126136052 157670065 315340130 630680260