Search a number
-
+
38145968 = 247421809
BaseRepresentation
bin1001000110000…
…0111110110000
32122210000102122
42101200332300
534231132333
63441333412
7642143510
oct221407660
978700378
1038145968
111a5946a3
1210937268
137b979a3
1450cd840
153537798
hex2460fb0

38145968 has 40 divisors (see below), whose sum is σ = 84771360. Its totient is φ = 16289280.

The previous prime is 38145953. The next prime is 38145997. The reversal of 38145968 is 86954183.

It is a super-2 number, since 2×381459682 = 2910229749314048, which contains 22 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46748 + ... + 47556.

It is an arithmetic number, because the mean of its divisors is an integer number (2119284).

Almost surely, 238145968 is an apocalyptic number.

It is an amenable number.

38145968 is an abundant number, since it is smaller than the sum of its proper divisors (46625392).

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

38145968 is a wasteful number, since it uses less digits than its factorization.

38145968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1239 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 38145968 is about 6176.2422232293. The cubic root of 38145968 is about 336.6274650736.

The spelling of 38145968 in words is "thirty-eight million, one hundred forty-five thousand, nine hundred sixty-eight".

Divisors: 1 2 4 7 8 14 16 28 56 112 421 809 842 1618 1684 2947 3236 3368 5663 5894 6472 6736 11326 11788 12944 22652 23576 45304 47152 90608 340589 681178 1362356 2384123 2724712 4768246 5449424 9536492 19072984 38145968