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68814408 = 23313220559
BaseRepresentation
bin1000001101000…
…00011001001000
311210111010121210
410012200121020
5120104030113
610454533120
71463625045
oct406403110
9153433553
1068814408
1135931313
121b0671a0
1311344cb0
1491d41cc
1560946c3
hex41a0648

68814408 has 32 divisors (see below), whose sum is σ = 185270400. Its totient is φ = 21173568.

The previous prime is 68814391. The next prime is 68814433. The reversal of 68814408 is 80441886.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109968 + ... + 110591.

It is an arithmetic number, because the mean of its divisors is an integer number (5789700).

Almost surely, 268814408 is an apocalyptic number.

It is an amenable number.

68814408 is an abundant number, since it is smaller than the sum of its proper divisors (116455992).

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

68814408 is a wasteful number, since it uses less digits than its factorization.

68814408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220581 (or 220577 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 68814408 is about 8295.4450151876. The cubic root of 68814408 is about 409.7885246909.

The spelling of 68814408 in words is "sixty-eight million, eight hundred fourteen thousand, four hundred eight".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 220559 441118 661677 882236 1323354 1764472 2646708 2867267 5293416 5734534 8601801 11469068 17203602 22938136 34407204 68814408