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71628852 = 2237098419
BaseRepresentation
bin1000100010011…
…11100000110100
311222210010022110
410101033200310
5121314110402
611035131020
71526556321
oct421174064
9158703273
1071628852
11374838a9
121bba3a70
1311abc049
149727b48
15644d56c
hex444f834

71628852 has 24 divisors (see below), whose sum is σ = 167389600. Its totient is φ = 23839776.

The previous prime is 71628833. The next prime is 71628853. The reversal of 71628852 is 25882617.

It is a self number, because there is not a number n which added to its sum of digits gives 71628852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71628853) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4299 + ... + 12717.

Almost surely, 271628852 is an apocalyptic number.

It is an amenable number.

71628852 is an abundant number, since it is smaller than the sum of its proper divisors (95760748).

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

71628852 is a wasteful number, since it uses less digits than its factorization.

71628852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9135 (or 9133 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 71628852 is about 8463.3830115386. The cubic root of 71628852 is about 415.3007004383.

The spelling of 71628852 in words is "seventy-one million, six hundred twenty-eight thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 12 709 1418 2127 2836 4254 8419 8508 16838 25257 33676 50514 101028 5969071 11938142 17907213 23876284 35814426 71628852