Search a number
-
+
39188720220 = 223513296612621
BaseRepresentation
bin100100011111110101…
…000110101001011100
310202011010111020212020
4210133311012221130
51120224303021340
630000354140140
72555063424426
oct443765065134
9122133436766
1039188720220
1115690013591
127718281650
133906c80460
141c7a947816
1510456829d0
hex91fd46a5c

39188720220 has 192 divisors, whose sum is σ = 122475507840. Its totient is φ = 9296179200.

The previous prime is 39188720213. The next prime is 39188720239. The reversal of 39188720220 is 2202788193.

It is a happy number.

It is a super-3 number, since 3×391887202203 (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14950510 + ... + 14953130.

It is an arithmetic number, because the mean of its divisors is an integer number (637893270).

Almost surely, 239188720220 is an apocalyptic number.

39188720220 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 39188720220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61237753920).

39188720220 is an abundant number, since it is smaller than the sum of its proper divisors (83286787620).

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

39188720220 is a wasteful number, since it uses less digits than its factorization.

39188720220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336 (or 3334 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 39188720220 in words is "thirty-nine billion, one hundred eighty-eight million, seven hundred twenty thousand, two hundred twenty".