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50720929 = 723133391
BaseRepresentation
bin1100000101111…
…1000010100001
310112102220000221
43001133002201
5100441032204
65011043041
71154056300
oct301370241
9115386027
1050720929
11266a3426
1214ba0481
13a67b5ac
146a44437
1546bd654
hex305f0a1

50720929 has 12 divisors (see below), whose sum is σ = 60907008. Its totient is φ = 42071400.

The previous prime is 50720927. The next prime is 50720953. The reversal of 50720929 is 92902705.

It is not a de Polignac number, because 50720929 - 21 = 50720927 is a prime.

It is a super-2 number, since 2×507209292 = 5145225277246082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50720894 and 50720903.

It is not an unprimeable number, because it can be changed into a prime (50720927) 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 11 ways as a sum of consecutive naturals, for example, 15177 + ... + 18214.

It is an arithmetic number, because the mean of its divisors is an integer number (5075584).

Almost surely, 250720929 is an apocalyptic number.

It is an amenable number.

50720929 is a deficient number, since it is larger than the sum of its proper divisors (10186079).

50720929 is a wasteful number, since it uses less digits than its factorization.

50720929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33436 (or 33429 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 50720929 is about 7121.8627479052. The cubic root of 50720929 is about 370.1653242193.

The spelling of 50720929 in words is "fifty million, seven hundred twenty thousand, nine hundred twenty-nine".

Divisors: 1 7 31 49 217 1519 33391 233737 1035121 1636159 7245847 50720929