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79832980 = 2253991649
BaseRepresentation
bin1001100001000…
…10011110010100
312120012221021001
410300202132110
5130414123410
611531033044
71656366133
oct460423624
9176187231
1079832980
1141077777
122289b784
1313702366
14a86191a
15701e33a
hex4c22794

79832980 has 12 divisors (see below), whose sum is σ = 167649300. Its totient is φ = 31933184.

The previous prime is 79832971. The next prime is 79832993. The reversal of 79832980 is 8923897.

It can be written as a sum of positive squares in 2 ways, for example, as 59166864 + 20666116 = 7692^2 + 4546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79832980.

It is a congruent number.

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, 1995805 + ... + 1995844.

It is an arithmetic number, because the mean of its divisors is an integer number (13970775).

Almost surely, 279832980 is an apocalyptic number.

It is an amenable number.

79832980 is an abundant number, since it is smaller than the sum of its proper divisors (87816320).

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

79832980 is a wasteful number, since it uses less digits than its factorization.

79832980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3991658 (or 3991656 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 79832980 is about 8934.9303298907. The cubic root of 79832980 is about 430.5868676838.

The spelling of 79832980 in words is "seventy-nine million, eight hundred thirty-two thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 3991649 7983298 15966596 19958245 39916490 79832980