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68298570 = 23255231451
BaseRepresentation
bin1000001001000…
…10011101001010
311202111221000200
410010202131022
5114441023240
610435513030
71456346124
oct404423512
9152457020
1068298570
11356097aa
121aa58776
13111c4272
1490dc214
155ee1930
hex412274a

68298570 has 48 divisors (see below), whose sum is σ = 178038432. Its totient is φ = 18165600.

The previous prime is 68298557. The next prime is 68298583. The reversal of 68298570 is 7589286.

It is an interprime number because it is at equal distance from previous prime (68298557) and next prime (68298583).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46345 + ... + 47795.

It is an arithmetic number, because the mean of its divisors is an integer number (3709134).

Almost surely, 268298570 is an apocalyptic number.

68298570 is an abundant number, since it is smaller than the sum of its proper divisors (109739862).

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

68298570 is a wasteful number, since it uses less digits than its factorization.

68298570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1984 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 68298570 is about 8264.2948882527. The cubic root of 68298570 is about 408.7620202396.

The spelling of 68298570 in words is "sixty-eight million, two hundred ninety-eight thousand, five hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 523 1046 1451 1569 2615 2902 3138 4353 4707 5230 7255 7845 8706 9414 13059 14510 15690 21765 23535 26118 43530 47070 65295 130590 758873 1517746 2276619 3794365 4553238 6829857 7588730 11383095 13659714 22766190 34149285 68298570