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79200980 = 2253960049
BaseRepresentation
bin1001011100010…
…00001011010100
312112000211022122
410232020023110
5130233412410
611505315112
71651124435
oct456101324
9175024278
1079200980
1140785961
1222635a98
13135407b1
14a73948c
156e46e55
hex4b882d4

79200980 has 12 divisors (see below), whose sum is σ = 166322100. Its totient is φ = 31680384.

The previous prime is 79200973. The next prime is 79201021. The reversal of 79200980 is 8900297.

It can be written as a sum of positive squares in 2 ways, for example, as 53027524 + 26173456 = 7282^2 + 5116^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79200980.

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, 1980005 + ... + 1980044.

It is an arithmetic number, because the mean of its divisors is an integer number (13860175).

Almost surely, 279200980 is an apocalyptic number.

It is an amenable number.

79200980 is an abundant number, since it is smaller than the sum of its proper divisors (87121120).

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

79200980 is a wasteful number, since it uses less digits than its factorization.

79200980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960058 (or 3960056 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 79200980 is about 8899.4932439999. The cubic root of 79200980 is about 429.4476050798.

The spelling of 79200980 in words is "seventy-nine million, two hundred thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 3960049 7920098 15840196 19800245 39600490 79200980