Search a number
-
+
38889162860 = 2256131876363
BaseRepresentation
bin100100001101111110…
…011000100001101100
310201101020211011102012
4210031332120201230
51114121111202420
625510533420352
72544465300362
oct441576304154
9121336734365
1038889162860
1115546a11719
127653a9a6b8
133889ba8c92
141c4cc4b632
15102920edc5
hex90df9886c

38889162860 has 24 divisors (see below), whose sum is σ = 83006051856. Its totient is φ = 15300653760.

The previous prime is 38889162853. The next prime is 38889162901. The reversal of 38889162860 is 6826198883.

It is a self number, because there is not a number n which added to its sum of digits gives 38889162860.

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, 15936962 + ... + 15939401.

It is an arithmetic number, because the mean of its divisors is an integer number (3458585494).

Almost surely, 238889162860 is an apocalyptic number.

It is an amenable number.

38889162860 is an abundant number, since it is smaller than the sum of its proper divisors (44116888996).

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

38889162860 is a wasteful number, since it uses less digits than its factorization.

38889162860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31876433 (or 31876431 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 38889162860 in words is "thirty-eight billion, eight hundred eighty-nine million, one hundred sixty-two thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 31876363 63752726 127505452 159381815 318763630 637527260 1944458143 3888916286 7777832572 9722290715 19444581430 38889162860