Search a number
-
+
9989838 = 233184997
BaseRepresentation
bin100110000110…
…111011001110
3200210112111000
4212012323032
510024133323
6554041130
7150624615
oct46067316
920715430
109989838
115703571
1234191a6
1320ba061
14148087c
15d24e43
hex986ece

9989838 has 16 divisors (see below), whose sum is σ = 22199760. Its totient is φ = 3329928.

The previous prime is 9989827. The next prime is 9989849. The reversal of 9989838 is 8389899.

It is an interprime number because it is at equal distance from previous prime (9989827) and next prime (9989849).

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 184997 = 9989838 / (9 + 9 + 8 + 9 + 8 + 3 + 8).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 92445 + ... + 92552.

It is an arithmetic number, because the mean of its divisors is an integer number (1387485).

Almost surely, 29989838 is an apocalyptic number.

9989838 is an abundant number, since it is smaller than the sum of its proper divisors (12209922).

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

9989838 is a wasteful number, since it uses less digits than its factorization.

9989838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185008 (or 185002 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 9989838 is about 3160.6704984860. The cubic root of 9989838 is about 215.3704663848.

It can be divided in two parts, 998983 and 8, that added together give a triangular number (998991 = T1413).

The spelling of 9989838 in words is "nine million, nine hundred eighty-nine thousand, eight hundred thirty-eight".

Divisors: 1 2 3 6 9 18 27 54 184997 369994 554991 1109982 1664973 3329946 4994919 9989838