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79985080 = 2357285661
BaseRepresentation
bin1001100010001…
…11100110111000
312120111122220101
410301013212320
5130434010310
611534205144
71660601440
oct461074670
9176448811
1079985080
1141170a7a
12229537b4
1313756666
14a8a1120
15704e43a
hex4c479b8

79985080 has 32 divisors (see below), whose sum is σ = 205676640. Its totient is φ = 27423360.

The previous prime is 79985077. The next prime is 79985107. The reversal of 79985080 is 8058997.

It is a super-2 number, since 2×799850802 = 12795226045212800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 79985080.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142551 + ... + 143110.

It is an arithmetic number, because the mean of its divisors is an integer number (6427395).

Almost surely, 279985080 is an apocalyptic number.

79985080 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

79985080 is an abundant number, since it is smaller than the sum of its proper divisors (125691560).

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

79985080 is a wasteful number, since it uses less digits than its factorization.

79985080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285679 (or 285675 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 79985080 is about 8943.4378177522. The cubic root of 79985080 is about 430.8601495363.

The spelling of 79985080 in words is "seventy-nine million, nine hundred eighty-five thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 285661 571322 1142644 1428305 1999627 2285288 2856610 3999254 5713220 7998508 9998135 11426440 15997016 19996270 39992540 79985080