Search a number
-
+
72541480 = 235111131459
BaseRepresentation
bin1000101001011…
…10010100101000
312001111111012111
410110232110220
5122032311410
611110452104
71540410124
oct424562450
9161444174
1072541480
1137a47540
1220364034
131204b56b
1498c4584
15657db8a
hex452e528

72541480 has 64 divisors (see below), whose sum is σ = 179755200. Its totient is φ = 26127360.

The previous prime is 72541477. The next prime is 72541489. The reversal of 72541480 is 8414527.

It is not an unprimeable number, because it can be changed into a prime (72541489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48991 + ... + 50449.

It is an arithmetic number, because the mean of its divisors is an integer number (2808675).

Almost surely, 272541480 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 72541480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89877600).

72541480 is an abundant number, since it is smaller than the sum of its proper divisors (107213720).

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

72541480 is a wasteful number, since it uses less digits than its factorization.

72541480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1590 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 72541480 is about 8517.1286241315. The cubic root of 72541480 is about 417.0570534990.

The spelling of 72541480 in words is "seventy-two million, five hundred forty-one thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 113 220 226 440 452 565 904 1130 1243 1459 2260 2486 2918 4520 4972 5836 6215 7295 9944 11672 12430 14590 16049 24860 29180 32098 49720 58360 64196 80245 128392 160490 164867 320980 329734 641960 659468 824335 1318936 1648670 1813537 3297340 3627074 6594680 7254148 9067685 14508296 18135370 36270740 72541480