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70102560 = 25351121771
BaseRepresentation
bin1000010110110…
…10111000100000
311212220120122010
410023122320200
5120421240220
610542312520
71510601433
oct413327040
9155816563
1070102560
1136631100
121b588740
13116a6408
14944b81a
15624b1e0
hex42dae20

70102560 has 288 divisors, whose sum is σ = 260620416. Its totient is φ = 15769600.

The previous prime is 70102553. The next prime is 70102573. The reversal of 70102560 is 6520107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 987325 + ... + 987395.

It is an arithmetic number, because the mean of its divisors is an integer number (904932).

Almost surely, 270102560 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 70102560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130310208).

70102560 is an abundant number, since it is smaller than the sum of its proper divisors (190517856).

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

70102560 is a wasteful number, since it uses less digits than its factorization.

70102560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 70102560 is about 8372.7271542789. The cubic root of 70102560 is about 412.3297074855.

Adding to 70102560 its reverse (6520107), we get a palindrome (76622667).

The spelling of 70102560 in words is "seventy million, one hundred two thousand, five hundred sixty".