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407712 = 25331137
BaseRepresentation
bin1100011100010100000
3202201021110
41203202200
5101021322
612423320
73315444
oct1434240
9681243
10407712
11259358
12177b40
13113766
14a8824
1580c0c
hex638a0

407712 has 48 divisors (see below), whose sum is σ = 1112832. Its totient is φ = 130560.

The previous prime is 407707. The next prime is 407713. The reversal of 407712 is 217704.

407712 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (407713) by changing a digit.

407712 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2908 + ... + 3044.

It is an arithmetic number, because the mean of its divisors is an integer number (23184).

2407712 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 407712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556416).

407712 is an abundant number, since it is smaller than the sum of its proper divisors (705120).

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

407712 is a wasteful number, since it uses less digits than its factorization.

407712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 407712 is about 638.5232963644. The cubic root of 407712 is about 74.1511398433.

The spelling of 407712 in words is "four hundred seven thousand, seven hundred twelve", and thus it is an iban number.

Divisors: 1 2 3 4 6 8 12 16 24 31 32 48 62 93 96 124 137 186 248 274 372 411 496 548 744 822 992 1096 1488 1644 2192 2976 3288 4247 4384 6576 8494 12741 13152 16988 25482 33976 50964 67952 101928 135904 203856 407712