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680049502 = 21171435371
BaseRepresentation
bin101000100010001…
…011101101011110
31202101122002112121
4220202023231132
52343043041002
6151251453154
722565216416
oct5042135536
91671562477
10680049502
11319963290
1216b8b71ba
13aab75672
1466463646
153ea81237
hex2888bb5e

680049502 has 16 divisors (see below), whose sum is σ = 1128484224. Its totient is φ = 304759000.

The previous prime is 680049473. The next prime is 680049527. The reversal of 680049502 is 205940086.

It is a happy number.

680049502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216124 + ... + 219247.

It is an arithmetic number, because the mean of its divisors is an integer number (70530264).

Almost surely, 2680049502 is an apocalyptic number.

680049502 is a deficient number, since it is larger than the sum of its proper divisors (448434722).

680049502 is a wasteful number, since it uses less digits than its factorization.

680049502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435455.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 680049502 is about 26077.7587610592. The cubic root of 680049502 is about 879.3872723318.

Adding to 680049502 its reverse (205940086), we get a palindrome (885989588).

The spelling of 680049502 in words is "six hundred eighty million, forty-nine thousand, five hundred two".

Divisors: 1 2 11 22 71 142 781 1562 435371 870742 4789081 9578162 30911341 61822682 340024751 680049502