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68694120 = 233251121983
BaseRepresentation
bin1000001100000…
…11000001101000
311210021000121200
410012003001220
5120041202440
610452204200
71462614255
oct406030150
9153230550
1068694120
1135859a00
121b009660
1311302311
1491a242c
15606dc30
hex4183068

68694120 has 288 divisors, whose sum is σ = 261424800. Its totient is φ = 15586560.

The previous prime is 68694083. The next prime is 68694121. The reversal of 68694120 is 2149686.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68694121) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 827599 + ... + 827681.

It is an arithmetic number, because the mean of its divisors is an integer number (907725).

Almost surely, 268694120 is an apocalyptic number.

68694120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68694120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130712400).

68694120 is an abundant number, since it is smaller than the sum of its proper divisors (192730680).

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

68694120 is a wasteful number, since it uses less digits than its factorization.

68694120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 68694120 is about 8288.1916001019. The cubic root of 68694120 is about 409.5496144942.

The spelling of 68694120 in words is "sixty-eight million, six hundred ninety-four thousand, one hundred twenty".