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68103648 = 2532236471
BaseRepresentation
bin1000000111100…
…10110111100000
311202011000122100
410003302313200
5114413304043
610431410400
71454604624
oct403626740
9152130570
1068103648
1135496308
121a983a00
1311156622
14908b184
155ea3cd3
hex40f2de0

68103648 has 36 divisors (see below), whose sum is σ = 193670568. Its totient is φ = 22701120.

The previous prime is 68103613. The next prime is 68103661. The reversal of 68103648 is 84630186.

It is a happy number.

68103648 is a `hidden beast` number, since 6 + 8 + 1 + 0 + 3 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117948 + ... + 118523.

It is an arithmetic number, because the mean of its divisors is an integer number (5379738).

Almost surely, 268103648 is an apocalyptic number.

It is an amenable number.

68103648 is an abundant number, since it is smaller than the sum of its proper divisors (125566920).

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

68103648 is a wasteful number, since it uses less digits than its factorization.

68103648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236487 (or 236476 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 68103648 is about 8252.4934413788. The cubic root of 68103648 is about 408.3727850077.

The spelling of 68103648 in words is "sixty-eight million, one hundred three thousand, six hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 236471 472942 709413 945884 1418826 1891768 2128239 2837652 3783536 4256478 5675304 7567072 8512956 11350608 17025912 22701216 34051824 68103648