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69989072 = 2431141107
BaseRepresentation
bin1000010101111…
…11001011010000
311212200210221212
410022333023100
5120404122242
610540035252
71506616526
oct412771320
9155623855
1069989072
113656390a
121b532b28
131166686a
14941c316
156227782
hex42bf2d0

69989072 has 20 divisors (see below), whose sum is σ = 139979136. Its totient is φ = 33865440.

The previous prime is 69989047. The next prime is 69989077. The reversal of 69989072 is 27098996.

69989072 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 69989072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69989077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70058 + ... + 71049.

Almost surely, 269989072 is an apocalyptic number.

69989072 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

69989072 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

69989072 is a wasteful number, since it uses less digits than its factorization.

69989072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141146 (or 141140 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 69989072 is about 8365.9471669381. The cubic root of 69989072 is about 412.1070824810.

The spelling of 69989072 in words is "sixty-nine million, nine hundred eighty-nine thousand, seventy-two".

Divisors: 1 2 4 8 16 31 62 124 248 496 141107 282214 564428 1128856 2257712 4374317 8748634 17497268 34994536 69989072