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68198916 = 22353157683
BaseRepresentation
bin1000001000010…
…10001000000100
311202022212022210
410010022020010
5114424331131
610433423420
71455452442
oct404121004
9152285283
1068198916
1135550945
121aa0ab70
131118aab6
1490b3b92
155ec2146
hex410a204

68198916 has 48 divisors (see below), whose sum is σ = 163404864. Its totient is φ = 22129536.

The previous prime is 68198899. The next prime is 68198929. The reversal of 68198916 is 61989186.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99511 + ... + 100193.

It is an arithmetic number, because the mean of its divisors is an integer number (3404268).

Almost surely, 268198916 is an apocalyptic number.

It is an amenable number.

68198916 is an abundant number, since it is smaller than the sum of its proper divisors (95205948).

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

68198916 is a wasteful number, since it uses less digits than its factorization.

68198916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 898 counting only the distinct ones).

The product of its digits is 186624, while the sum is 48.

The square root of 68198916 is about 8258.2634978547. The cubic root of 68198916 is about 408.5631161318.

The spelling of 68198916 in words is "sixty-eight million, one hundred ninety-eight thousand, nine hundred sixteen".

Divisors: 1 2 3 4 6 12 53 106 157 159 212 314 318 471 628 636 683 942 1366 1884 2049 2732 4098 8196 8321 16642 24963 33284 36199 49926 72398 99852 107231 108597 144796 214462 217194 321693 428924 434388 643386 1286772 5683243 11366486 17049729 22732972 34099458 68198916