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68740048 = 2413563587
BaseRepresentation
bin1000001100011…
…10001111010000
311210100100121201
410012032033100
5120044140143
610453200544
71463165206
oct406161720
9153310551
1068740048
1135890463
121b030154
131131a1b0
1491b5076
15607c64d
hex418e3d0

68740048 has 40 divisors (see below), whose sum is σ = 143928288. Its totient is φ = 31615872.

The previous prime is 68740013. The next prime is 68740069. The reversal of 68740048 is 84004786.

It is a junction number, because it is equal to n+sod(n) for n = 68739989 and 68740016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116811 + ... + 117397.

Almost surely, 268740048 is an apocalyptic number.

It is an amenable number.

68740048 is an abundant number, since it is smaller than the sum of its proper divisors (75188240).

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

68740048 is a wasteful number, since it uses less digits than its factorization.

68740048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 68740048 is about 8290.9618259886. The cubic root of 68740048 is about 409.6408673518.

The spelling of 68740048 in words is "sixty-eight million, seven hundred forty thousand, forty-eight".

Divisors: 1 2 4 8 13 16 26 52 104 208 563 587 1126 1174 2252 2348 4504 4696 7319 7631 9008 9392 14638 15262 29276 30524 58552 61048 117104 122096 330481 660962 1321924 2643848 4296253 5287696 8592506 17185012 34370024 68740048