Search a number
-
+
2069980 = 22511972
BaseRepresentation
bin111111001010111011100
310220011110221
413321113130
51012214410
6112211124
723410633
oct7712734
93804427
102069980
111194230
12839aa4
13576253
143bc51a
152ad4da
hex1f95dc

2069980 has 36 divisors (see below), whose sum is σ = 4791528. Its totient is φ = 744960.

The previous prime is 2069959. The next prime is 2069983. The reversal of 2069980 is 899602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2069983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21292 + ... + 21388.

It is an arithmetic number, because the mean of its divisors is an integer number (133098).

22069980 is an apocalyptic number.

2069980 is a gapful number since it is divisible by the number (20) 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 2069980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2395764).

2069980 is an abundant number, since it is smaller than the sum of its proper divisors (2721548).

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

2069980 is a wasteful number, since it uses less digits than its factorization.

2069980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 2069980 is about 1438.7425064966. The cubic root of 2069980 is about 127.4447793680. Note that the first 3 decimals are identical.

The spelling of 2069980 in words is "two million, sixty-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 97 110 194 220 388 485 970 1067 1940 2134 4268 5335 9409 10670 18818 21340 37636 47045 94090 103499 188180 206998 413996 517495 1034990 2069980