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72485580 = 22354312803
BaseRepresentation
bin1000101001000…
…00101011001100
312001101122112010
410110200223030
5122024014310
611105341220
71540055136
oct424405314
9161348463
1072485580
1137a09542
1220337810
131202bc9b
1498ac056
15656c320
hex4520acc

72485580 has 48 divisors (see below), whose sum is σ = 203503104. Its totient is φ = 19277760.

The previous prime is 72485561. The next prime is 72485641. The reversal of 72485580 is 8558427.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24459 + ... + 27261.

It is an arithmetic number, because the mean of its divisors is an integer number (4239648).

Almost surely, 272485580 is an apocalyptic number.

It is an amenable number.

72485580 is an abundant number, since it is smaller than the sum of its proper divisors (131017524).

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

72485580 is a wasteful number, since it uses less digits than its factorization.

72485580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246 (or 3244 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 72485580 is about 8513.8463692975. The cubic root of 72485580 is about 416.9498988051.

The spelling of 72485580 in words is "seventy-two million, four hundred eighty-five thousand, five hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 431 862 1293 1724 2155 2586 2803 4310 5172 5606 6465 8409 8620 11212 12930 14015 16818 25860 28030 33636 42045 56060 84090 168180 1208093 2416186 3624279 4832372 6040465 7248558 12080930 14497116 18121395 24161860 36242790 72485580