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415680720 = 243572132719
BaseRepresentation
bin11000110001101…
…100100011010000
31001222011202202020
4120301230203100
51322403240340
6105125251440
713205141100
oct3061544320
91058152666
10415680720
111a3706094
12b7263b80
1368171a30
143d2c7200
152675e9d0
hex18c6c8d0

415680720 has 240 divisors, whose sum is σ = 1614896640. Its totient is φ = 87671808.

The previous prime is 415680701. The next prime is 415680743. The reversal of 415680720 is 27086514.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151521 + ... + 154239.

It is an arithmetic number, because the mean of its divisors is an integer number (6728736).

Almost surely, 2415680720 is an apocalyptic number.

415680720 is a gapful number since it is divisible by the number (40) 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 415680720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807448320).

415680720 is an abundant number, since it is smaller than the sum of its proper divisors (1199215920).

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

415680720 is a wasteful number, since it uses less digits than its factorization.

415680720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 415680720 is about 20388.2495570365. The cubic root of 415680720 is about 746.3112023293.

The spelling of 415680720 in words is "four hundred fifteen million, six hundred eighty thousand, seven hundred twenty".