Search a number
-
+
1998708 = 223193863
BaseRepresentation
bin111100111111101110100
310202112201020
413213331310
51002424313
6110501140
722663065
oct7477564
93675636
101998708
111145728
128047b0
1354c98a
143a056c
15297323
hex1e7f74

1998708 has 24 divisors (see below), whose sum is σ = 4693248. Its totient is φ = 662016.

The previous prime is 1998701. The next prime is 1998727. The reversal of 1998708 is 8078991.

1998708 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1998708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1885 + ... + 2747.

It is an arithmetic number, because the mean of its divisors is an integer number (195552).

21998708 is an apocalyptic number.

It is an amenable number.

1998708 is an abundant number, since it is smaller than the sum of its proper divisors (2694540).

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

1998708 is a wasteful number, since it uses less digits than its factorization.

1998708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 1998708 is about 1413.7566975969. The cubic root of 1998708 is about 125.9649688454.

The spelling of 1998708 in words is "one million, nine hundred ninety-eight thousand, seven hundred eight".

Divisors: 1 2 3 4 6 12 193 386 579 772 863 1158 1726 2316 2589 3452 5178 10356 166559 333118 499677 666236 999354 1998708