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38539000208 = 2419223756671
BaseRepresentation
bin100011111001000110…
…100111100110010000
310200110211221001120002
4203321012213212100
51112411441001313
625412104305132
72533014045122
oct437106474620
9120424831502
1038539000208
11153872962a5
1275767721a8
133832496a47
141c1853b212
1510085e3058
hex8f91a7990

38539000208 has 40 divisors (see below), whose sum is σ = 78635800320. Its totient is φ = 18246833280.

The previous prime is 38539000121. The next prime is 38539000309. The reversal of 38539000208 is 80200093583.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 651713 + ... + 708383.

It is an arithmetic number, because the mean of its divisors is an integer number (1965895008).

Almost surely, 238539000208 is an apocalyptic number.

38539000208 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

38539000208 is the 113342-nd octagonal number.

It is an amenable number.

38539000208 is an abundant number, since it is smaller than the sum of its proper divisors (40096800112).

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

38539000208 is a wasteful number, since it uses less digits than its factorization.

38539000208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58935 (or 58929 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 38539000208 in words is "thirty-eight billion, five hundred thirty-nine million, two hundred eight", and thus it is an aban number.

Divisors: 1 2 4 8 16 19 38 76 152 304 2237 4474 8948 17896 35792 42503 56671 85006 113342 170012 226684 340024 453368 680048 906736 1076749 2153498 4306996 8613992 17227984 126773027 253546054 507092108 1014184216 2028368432 2408687513 4817375026 9634750052 19269500104 38539000208