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38000805388 = 22713853122389
BaseRepresentation
bin100011011001000001…
…100100011000001100
310122002100012221001121
4203121001210120030
51110311201233023
625242441050324
72513460342040
oct433101443014
9118070187047
1038000805388
1115130511597
1274464869a4
133777b2a980
141ba6c82020
15ec6232d5d
hex8d906460c

38000805388 has 48 divisors (see below), whose sum is σ = 81944511040. Its totient is φ = 15015538944.

The previous prime is 38000805343. The next prime is 38000805389. The reversal of 38000805388 is 88350800083.

It is a super-2 number, since 2×380008053882 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38000805389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249298 + ... + 371686.

Almost surely, 238000805388 is an apocalyptic number.

It is an amenable number.

38000805388 is an abundant number, since it is smaller than the sum of its proper divisors (43943705652).

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

38000805388 is a wasteful number, since it uses less digits than its factorization.

38000805388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123266 (or 123264 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 38000805388 in words is "thirty-eight billion, eight hundred five thousand, three hundred eighty-eight".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 853 1706 3412 5971 11089 11942 22178 23884 44356 77623 122389 155246 244778 310492 489556 856723 1591057 1713446 3182114 3426892 6364228 11137399 22274798 44549596 104397817 208795634 417591268 730784719 1357171621 1461569438 2714343242 2923138876 5428686484 9500201347 19000402694 38000805388