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68631260 = 2255416343
BaseRepresentation
bin1000001011100…
…11101011011100
311210010211101112
410011303223130
5120032200020
610451001152
71462233065
oct405635334
9153124345
1068631260
1135816755
121ab991b8
13112ac819
14918756c
15605a2c5
hex4173adc

68631260 has 24 divisors (see below), whose sum is σ = 144414816. Its totient is φ = 27397440.

The previous prime is 68631259. The next prime is 68631307. The reversal of 68631260 is 6213686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7649 + ... + 13991.

It is an arithmetic number, because the mean of its divisors is an integer number (6017284).

Almost surely, 268631260 is an apocalyptic number.

It is an amenable number.

68631260 is an abundant number, since it is smaller than the sum of its proper divisors (75783556).

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

68631260 is a wasteful number, since it uses less digits than its factorization.

68631260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6893 (or 6891 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 68631260 is about 8284.3985901211. The cubic root of 68631260 is about 409.4246540396.

The spelling of 68631260 in words is "sixty-eight million, six hundred thirty-one thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 541 1082 2164 2705 5410 6343 10820 12686 25372 31715 63430 126860 3431563 6863126 13726252 17157815 34315630 68631260