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68280632 = 2371219297
BaseRepresentation
bin1000001000111…
…10000100111000
311202111000102022
410010132010320
5114434440012
610435254012
71456242620
oct404360470
9152430368
1068280632
11355a7282
121aa4a308
13111b9054
1490d5880
155edb472
hex411e138

68280632 has 16 divisors (see below), whose sum is σ = 146315760. Its totient is φ = 29263104.

The previous prime is 68280617. The next prime is 68280649. The reversal of 68280632 is 23608286.

It is a junction number, because it is equal to n+sod(n) for n = 68280592 and 68280601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609593 + ... + 609704.

It is an arithmetic number, because the mean of its divisors is an integer number (9144735).

Almost surely, 268280632 is an apocalyptic number.

It is an amenable number.

68280632 is an abundant number, since it is smaller than the sum of its proper divisors (78035128).

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

68280632 is a wasteful number, since it uses less digits than its factorization.

68280632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219310 (or 1219306 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 68280632 is about 8263.2095459331. The cubic root of 68280632 is about 408.7262312271.

The spelling of 68280632 in words is "sixty-eight million, two hundred eighty thousand, six hundred thirty-two".

Divisors: 1 2 4 7 8 14 28 56 1219297 2438594 4877188 8535079 9754376 17070158 34140316 68280632