Search a number
-
+
164207980 = 2258210399
BaseRepresentation
bin10011100100110…
…01110101101100
3102102222122000001
421302121311230
5314014123410
624143314044
74032513316
oct1162316554
9372878001
10164207980
1184766982
1246bab924
1328034bb1
1417b467b6
15e63933a
hex9c99d6c

164207980 has 12 divisors (see below), whose sum is σ = 344836800. Its totient is φ = 65683184.

The previous prime is 164207963. The next prime is 164207987. The reversal of 164207980 is 89702461.

It is not an unprimeable number, because it can be changed into a prime (164207987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4105180 + ... + 4105219.

It is an arithmetic number, because the mean of its divisors is an integer number (28736400).

Almost surely, 2164207980 is an apocalyptic number.

164207980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164207980 is an abundant number, since it is smaller than the sum of its proper divisors (180628820).

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

164207980 is a wasteful number, since it uses less digits than its factorization.

164207980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210408 (or 8210406 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 164207980 is about 12814.3661567789. The cubic root of 164207980 is about 547.6016560960.

The spelling of 164207980 in words is "one hundred sixty-four million, two hundred seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 8210399 16420798 32841596 41051995 82103990 164207980