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50280020 = 2257359143
BaseRepresentation
bin1011111111001…
…1011001010100
310111121111012222
42333303121110
5100332430040
64553401512
71150241660
oct277633124
9114544188
1050280020
112642213a
1214a09298
13a5559bb
14696b8a0
154632bb5
hex2ff3654

50280020 has 24 divisors (see below), whose sum is σ = 120672384. Its totient is φ = 17238816.

The previous prime is 50280019. The next prime is 50280037. The reversal of 50280020 is 2008205.

It is a happy number.

It is a super-2 number, since 2×502800202 = 5056160822400800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179432 + ... + 179711.

It is an arithmetic number, because the mean of its divisors is an integer number (5028016).

Almost surely, 250280020 is an apocalyptic number.

It is an amenable number.

50280020 is an abundant number, since it is smaller than the sum of its proper divisors (70392364).

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

50280020 is a wasteful number, since it uses less digits than its factorization.

50280020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359159 (or 359157 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 50280020 is about 7090.8405707645. The cubic root of 50280020 is about 369.0896049802.

Adding to 50280020 its reverse (2008205), we get a palindrome (52288225).

The spelling of 50280020 in words is "fifty million, two hundred eighty thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 359143 718286 1436572 1795715 2514001 3591430 5028002 7182860 10056004 12570005 25140010 50280020