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50312420 = 2252515621
BaseRepresentation
bin1011111111101…
…1010011100100
310111200010122222
42333323103210
5100334444140
64554211512
71150435304
oct277732344
9114603588
1050312420
1126444514
1214a23b98
13a567682
146979604
15463c5b5
hex2ffb4e4

50312420 has 12 divisors (see below), whose sum is σ = 105656124. Its totient is φ = 20124960.

The previous prime is 50312417. The next prime is 50312429. The reversal of 50312420 is 2421305.

It can be written as a sum of positive squares in 2 ways, for example, as 39866596 + 10445824 = 6314^2 + 3232^2 .

It is not an unprimeable number, because it can be changed into a prime (50312429) 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, 1257791 + ... + 1257830.

It is an arithmetic number, because the mean of its divisors is an integer number (8804677).

Almost surely, 250312420 is an apocalyptic number.

It is an amenable number.

50312420 is an abundant number, since it is smaller than the sum of its proper divisors (55343704).

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

50312420 is a wasteful number, since it uses less digits than its factorization.

50312420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515630 (or 2515628 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 50312420 is about 7093.1248402943. The cubic root of 50312420 is about 369.1688673159.

Adding to 50312420 its reverse (2421305), we get a palindrome (52733725).

The spelling of 50312420 in words is "fifty million, three hundred twelve thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 2515621 5031242 10062484 12578105 25156210 50312420