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489678970 = 251123193549
BaseRepresentation
bin11101001011111…
…110100001111010
31021010102021021011
4131023332201322
52000324211340
6120331304134
715064126324
oct3513764172
91233367234
10489678970
11231458070
12117bab04a
137a5b0391
144906a614
152ceca0ea
hex1d2fe87a

489678970 has 32 divisors (see below), whose sum is σ = 1003363200. Its totient is φ = 170322240.

The previous prime is 489678961. The next prime is 489678971. The reversal of 489678970 is 79876984.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (489678971) 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, 94245 + ... + 99304.

It is an arithmetic number, because the mean of its divisors is an integer number (31355100).

Almost surely, 2489678970 is an apocalyptic number.

489678970 is an abundant number, since it is smaller than the sum of its proper divisors (513684230).

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

489678970 is a wasteful number, since it uses less digits than its factorization.

489678970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193590.

The product of its (nonzero) digits is 6096384, while the sum is 58.

The square root of 489678970 is about 22128.6911045367. The cubic root of 489678970 is about 788.2013075744.

The spelling of 489678970 in words is "four hundred eighty-nine million, six hundred seventy-eight thousand, nine hundred seventy".

Divisors: 1 2 5 10 11 22 23 46 55 110 115 230 253 506 1265 2530 193549 387098 967745 1935490 2129039 4258078 4451627 8903254 10645195 21290390 22258135 44516270 48967897 97935794 244839485 489678970