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68469930 = 23251993823
BaseRepresentation
bin1000001010011…
…00010010101010
311202211122002100
410011030102222
5120012014210
610443314230
71460661534
oct405142252
9152748070
1068469930
1135716521
121ab1b976
1311254269
149144854
1560275c0
hex414c4aa

68469930 has 48 divisors (see below), whose sum is σ = 178963200. Its totient is φ = 18162144.

The previous prime is 68469923. The next prime is 68469941. The reversal of 68469930 is 3996486.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15999 + ... + 19821.

It is an arithmetic number, because the mean of its divisors is an integer number (3728400).

Almost surely, 268469930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68469930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89481600).

68469930 is an abundant number, since it is smaller than the sum of its proper divisors (110493270).

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

68469930 is a wasteful number, since it uses less digits than its factorization.

68469930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035 (or 4032 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 68469930 is about 8274.6558840836. The cubic root of 68469930 is about 409.1035938154.

The spelling of 68469930 in words is "sixty-eight million, four hundred sixty-nine thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 199 398 597 995 1194 1791 1990 2985 3582 3823 5970 7646 8955 11469 17910 19115 22938 34407 38230 57345 68814 114690 172035 344070 760777 1521554 2282331 3803885 4564662 6846993 7607770 11411655 13693986 22823310 34234965 68469930