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68429080 = 23517103977
BaseRepresentation
bin1000001010000…
…10010100011000
311202202120001101
410011002110120
5120004212310
610442401144
71460431456
oct405022430
9152676041
1068429080
1135698865
121ab001b4
131123b7a5
1491339d6
15601a43a
hex4142518

68429080 has 64 divisors (see below), whose sum is σ = 164773440. Its totient is φ = 25485312.

The previous prime is 68429069. The next prime is 68429083. The reversal of 68429080 is 8092486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68429083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69552 + ... + 70528.

It is an arithmetic number, because the mean of its divisors is an integer number (2574585).

Almost surely, 268429080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68429080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82386720).

68429080 is an abundant number, since it is smaller than the sum of its proper divisors (96344360).

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

68429080 is a wasteful number, since it uses less digits than its factorization.

68429080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108 (or 1104 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 68429080 is about 8272.1871352140. The cubic root of 68429080 is about 409.0222188897.

The spelling of 68429080 in words is "sixty-eight million, four hundred twenty-nine thousand, eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 103 136 170 206 340 412 515 680 824 977 1030 1751 1954 2060 3502 3908 4120 4885 7004 7816 8755 9770 14008 16609 17510 19540 33218 35020 39080 66436 70040 83045 100631 132872 166090 201262 332180 402524 503155 664360 805048 1006310 1710727 2012620 3421454 4025240 6842908 8553635 13685816 17107270 34214540 68429080