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50000020 = 22571918797
BaseRepresentation
bin1011111010111…
…1000010010100
310111002021010121
42332233002110
5100300000040
64543401324
71144664440
oct276570224
9114067117
1050000020
1126250834
12148b3244
13a488415
1468d7820
1545c9c4a
hex2faf094

50000020 has 48 divisors (see below), whose sum is σ = 126322560. Its totient is φ = 16239744.

The previous prime is 50000017. The next prime is 50000021. The reversal of 50000020 is 2000005.

It is a sliding number, since 50000020 = 20 + 50000000 and 1/20 + 1/50000000 = 0.050000020.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 49999958 and 50000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50000021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6739 + ... + 12058.

It is an arithmetic number, because the mean of its divisors is an integer number (2631720).

Almost surely, 250000020 is an apocalyptic number.

It is an amenable number.

50000020 is an abundant number, since it is smaller than the sum of its proper divisors (76322540).

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

50000020 is a wasteful number, since it uses less digits than its factorization.

50000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18832 (or 18830 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 7.

The square root of 50000020 is about 7071.0692260789. The cubic root of 50000020 is about 368.4031989845.

Adding to 50000020 its reverse (2000005), we get a palindrome (52000025).

It can be divided in two parts, 500000 and 20, that multiplied together give a 7-th power (10000000 = 107).

The spelling of 50000020 in words is "fifty million, twenty", and thus it is an aban number and an uban number.

Divisors: 1 2 4 5 7 10 14 19 20 28 35 38 70 76 95 133 140 190 266 380 532 665 1330 2660 18797 37594 75188 93985 131579 187970 263158 357143 375940 526316 657895 714286 1315790 1428572 1785715 2500001 2631580 3571430 5000002 7142860 10000004 12500005 25000010 50000020