Search a number
-
+
38700000000 = 28325843
BaseRepresentation
bin100100000010101100…
…110010001100000000
310200220001212200202100
4210002230302030000
51113224200000000
625440055150400
72540010400224
oct440254621400
9120801780670
1038700000000
111545a160882
127600675400
1338599475ac
141c31a8a784
1510177e6a00
hex902b32300

38700000000 has 486 divisors, whose sum is σ = 142720630052. Its totient is φ = 10080000000.

The previous prime is 38699999951. The next prime is 38700000061. The reversal of 38700000000 is 783.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 899999979 + ... + 900000021.

Almost surely, 238700000000 is an apocalyptic number.

38700000000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38700000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71360315026).

38700000000 is an abundant number, since it is smaller than the sum of its proper divisors (104020630052).

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

38700000000 is an frugal number, since it uses more digits than its factorization.

38700000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

Adding to 38700000000 its reverse (783), we get a palindrome (38700000783).

The spelling of 38700000000 in words is "thirty-eight billion, seven hundred million", and thus it is an aban number.