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70047120 = 243511132157
BaseRepresentation
bin1000010110011…
…01010110010000
311212210202120210
410023031112100
5120413001440
610541204120
71510251003
oct413152620
9155722523
1070047120
11365a3490
121b560640
1311687100
14943553a
156239a80
hex42cd590

70047120 has 240 divisors, whose sum is σ = 258144192. Its totient is φ = 15575040.

The previous prime is 70047119. The next prime is 70047127. The reversal of 70047120 is 2174007.

It is a tau number, because it is divible by the number of its divisors (240).

It is not an unprimeable number, because it can be changed into a prime (70047127) by changing a digit.

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, 446082 + ... + 446238.

Almost surely, 270047120 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 70047120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129072096).

70047120 is an abundant number, since it is smaller than the sum of its proper divisors (188097072).

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

70047120 is a wasteful number, since it uses less digits than its factorization.

70047120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 70047120 is about 8369.4157502182. The cubic root of 70047120 is about 412.2209830313.

The spelling of 70047120 in words is "seventy million, forty-seven thousand, one hundred twenty".