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68192620 = 22533110301
BaseRepresentation
bin1000001000010…
…00100101101100
311202022112200121
410010020211230
5114424130440
610433334324
71455425206
oct404104554
9152275617
1068192620
1135547141
121aa073a4
1311187c82
1490b1776
155ec034a
hex410896c

68192620 has 24 divisors (see below), whose sum is σ = 143651088. Its totient is φ = 27192000.

The previous prime is 68192617. The next prime is 68192651. The reversal of 68192620 is 2629186.

It is a happy 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, 1470 + ... + 11770.

It is an arithmetic number, because the mean of its divisors is an integer number (5985462).

Almost surely, 268192620 is an apocalyptic number.

It is an amenable number.

68192620 is an abundant number, since it is smaller than the sum of its proper divisors (75458468).

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

68192620 is a wasteful number, since it uses less digits than its factorization.

68192620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641 (or 10639 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 68192620 is about 8257.8822951166. The cubic root of 68192620 is about 408.5505431434.

The spelling of 68192620 in words is "sixty-eight million, one hundred ninety-two thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 331 662 1324 1655 3310 6620 10301 20602 41204 51505 103010 206020 3409631 6819262 13638524 17048155 34096310 68192620