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72830124 = 2233897577
BaseRepresentation
bin1000101011101…
…00110010101100
312002001011011000
410111310302230
5122121030444
611121000300
71543021503
oct425646254
9162034130
1072830124
1138124394
1220483090
131211ca63
14995b83a
1565d9469
hex4574cac

72830124 has 48 divisors (see below), whose sum is σ = 190965600. Its totient is φ = 24000768.

The previous prime is 72830123. The next prime is 72830141. The reversal of 72830124 is 42103827.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (72830123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5824 + ... + 13400.

It is an arithmetic number, because the mean of its divisors is an integer number (3978450).

Almost surely, 272830124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72830124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95482800).

72830124 is an abundant number, since it is smaller than the sum of its proper divisors (118135476).

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

72830124 is a wasteful number, since it uses less digits than its factorization.

72830124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7679 (or 7671 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 72830124 is about 8534.0567141307. The cubic root of 72830124 is about 417.6094808919.

The spelling of 72830124 in words is "seventy-two million, eight hundred thirty thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 89 108 178 267 356 534 801 1068 1602 2403 3204 4806 7577 9612 15154 22731 30308 45462 68193 90924 136386 204579 272772 409158 674353 818316 1348706 2023059 2697412 4046118 6069177 8092236 12138354 18207531 24276708 36415062 72830124