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76529620 = 2253826481
BaseRepresentation
bin1001000111110…
…11111111010100
312100000002220101
410203323333110
5124042421440
611332143444
71616330266
oct443737724
9170002811
1076529620
113a220922
1221767b84
1312b168cb
14a241b36
156aba69a
hex48fbfd4

76529620 has 12 divisors (see below), whose sum is σ = 160712244. Its totient is φ = 30611840.

The previous prime is 76529603. The next prime is 76529627. The reversal of 76529620 is 2692567.

It can be written as a sum of positive squares in 2 ways, for example, as 27164944 + 49364676 = 5212^2 + 7026^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 76529620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76529627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913221 + ... + 1913260.

It is an arithmetic number, because the mean of its divisors is an integer number (13392687).

Almost surely, 276529620 is an apocalyptic number.

It is an amenable number.

76529620 is an abundant number, since it is smaller than the sum of its proper divisors (84182624).

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

76529620 is a wasteful number, since it uses less digits than its factorization.

76529620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826490 (or 3826488 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 76529620 is about 8748.1209410936. The cubic root of 76529620 is about 424.5640188816.

The spelling of 76529620 in words is "seventy-six million, five hundred twenty-nine thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 3826481 7652962 15305924 19132405 38264810 76529620