Search a number
-
+
98971280 = 24517611193
BaseRepresentation
bin1011110011000…
…10111010010000
320220020021001222
411321202322100
5200314040110
613453144212
72311146002
oct571427220
9226207058
1098971280
1150959651
122918b068
13176734b5
14d204372
158a4ec55
hex5e62e90

98971280 has 80 divisors (see below), whose sum is σ = 247845744. Its totient is φ = 36618240.

The previous prime is 98971273. The next prime is 98971303. The reversal of 98971280 is 8217989.

It can be written as a sum of positive squares in 8 ways, for example, as 4648336 + 94322944 = 2156^2 + 9712^2 .

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 82364 + ... + 83556.

Almost surely, 298971280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98971280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123922872).

98971280 is an abundant number, since it is smaller than the sum of its proper divisors (148874464).

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

98971280 is a wasteful number, since it uses less digits than its factorization.

98971280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 98971280 is about 9948.4310320774. The cubic root of 98971280 is about 462.5617623874.

The spelling of 98971280 in words is "ninety-eight million, nine hundred seventy-one thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 17 20 34 40 61 68 80 85 122 136 170 244 272 305 340 488 610 680 976 1037 1193 1220 1360 2074 2386 2440 4148 4772 4880 5185 5965 8296 9544 10370 11930 16592 19088 20281 20740 23860 40562 41480 47720 72773 81124 82960 95440 101405 145546 162248 202810 291092 324496 363865 405620 582184 727730 811240 1164368 1237141 1455460 1622480 2474282 2910920 4948564 5821840 6185705 9897128 12371410 19794256 24742820 49485640 98971280