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68794550 = 25211283137
BaseRepresentation
bin1000001100110…
…11100010110110
311210110010101022
410012123202312
5120102411200
610454301142
71463513126
oct406334266
9153403338
1068794550
1135918400
121b0577b2
1311338c46
1491cac86
15608d885
hex419b8b6

68794550 has 72 divisors (see below), whose sum is σ = 143381448. Its totient is φ = 24534400.

The previous prime is 68794547. The next prime is 68794553. The reversal of 68794550 is 5549786.

It is an interprime number because it is at equal distance from previous prime (68794547) and next prime (68794553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68794553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 502082 + ... + 502218.

It is an arithmetic number, because the mean of its divisors is an integer number (1991409).

Almost surely, 268794550 is an apocalyptic number.

68794550 is an abundant number, since it is smaller than the sum of its proper divisors (74586898).

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

68794550 is a wasteful number, since it uses less digits than its factorization.

68794550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 68794550 is about 8294.2480069021. The cubic root of 68794550 is about 409.7491028913.

The spelling of 68794550 in words is "sixty-eight million, seven hundred ninety-four thousand, five hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 83 110 121 137 166 242 274 275 415 550 605 685 830 913 1210 1370 1507 1826 2075 3014 3025 3425 4150 4565 6050 6850 7535 9130 10043 11371 15070 16577 20086 22742 22825 33154 37675 45650 50215 56855 75350 82885 100430 113710 125081 165770 250162 251075 284275 414425 502150 568550 625405 828850 1250810 1375891 2751782 3127025 6254050 6879455 13758910 34397275 68794550