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8715040 = 25554469
BaseRepresentation
bin100001001111…
…101100100000
3121101202210021
4201033230200
54212340130
6510443224
7134035165
oct41175440
917352707
108715040
114a12814
122b03514
131a61a39
14122c06c
15b7237a
hex84fb20

8715040 has 24 divisors (see below), whose sum is σ = 20589660. Its totient is φ = 3485952.

The previous prime is 8715029. The next prime is 8715041. The reversal of 8715040 is 405178.

8715040 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8690704 + 24336 = 2948^2 + 156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8714996 and 8715014.

It is not an unprimeable number, because it can be changed into a prime (8715041) 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, 27075 + ... + 27394.

Almost surely, 28715040 is an apocalyptic number.

8715040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8715040 is an abundant number, since it is smaller than the sum of its proper divisors (11874620).

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

8715040 is a wasteful number, since it uses less digits than its factorization.

8715040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54484 (or 54476 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 8715040 is about 2952.1246586145. The cubic root of 8715040 is about 205.7894603267.

The spelling of 8715040 in words is "eight million, seven hundred fifteen thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 54469 108938 217876 272345 435752 544690 871504 1089380 1743008 2178760 4357520 8715040