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247070 = 2531797
BaseRepresentation
bin111100010100011110
3110112220202
4330110132
530401240
65143502
72046215
oct742436
9415822
10247070
1115969a
12bab92
13885c5
146607c
154d315
hex3c51e

247070 has 16 divisors (see below), whose sum is σ = 459648. Its totient is φ = 95520.

The previous prime is 247069. The next prime is 247073. The reversal of 247070 is 70742.

It is a super-2 number, since 2×2470702 = 122087169800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89 + ... + 708.

It is an arithmetic number, because the mean of its divisors is an integer number (28728).

2247070 is an apocalyptic number.

247070 is a deficient number, since it is larger than the sum of its proper divisors (212578).

247070 is a wasteful number, since it uses less digits than its factorization.

247070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 247070 is about 497.0613644209. The cubic root of 247070 is about 62.7489801583.

The spelling of 247070 in words is "two hundred forty-seven thousand, seventy", and thus it is an iban number.

Divisors: 1 2 5 10 31 62 155 310 797 1594 3985 7970 24707 49414 123535 247070