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70436180 = 2256735233
BaseRepresentation
bin1000011001011…
…00010101010100
311220112112021102
410030230111110
5121012424210
610553405232
71513461203
oct414542524
9156475242
1070436180
1136839821
121b709818
1311792219
1494d723a
1562b4ea5
hex432c554

70436180 has 24 divisors (see below), whose sum is σ = 148164072. Its totient is φ = 28127232.

The previous prime is 70436131. The next prime is 70436183. The reversal of 70436180 is 8163407.

It can be written as a sum of positive squares in 4 ways, for example, as 17960644 + 52475536 = 4238^2 + 7244^2 .

It is a super-2 number, since 2×704361802 = 9922510905984800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70436183) 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 7 ways as a sum of consecutive naturals, for example, 10844 + ... + 16076.

It is an arithmetic number, because the mean of its divisors is an integer number (6173503).

Almost surely, 270436180 is an apocalyptic number.

It is an amenable number.

70436180 is an abundant number, since it is smaller than the sum of its proper divisors (77727892).

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

70436180 is a wasteful number, since it uses less digits than its factorization.

70436180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915 (or 5913 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 70436180 is about 8392.6265257070. The cubic root of 70436180 is about 412.9827687175.

Adding to 70436180 its reverse (8163407), we get a palindrome (78599587).

The spelling of 70436180 in words is "seventy million, four hundred thirty-six thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 673 1346 2692 3365 5233 6730 10466 13460 20932 26165 52330 104660 3521809 7043618 14087236 17609045 35218090 70436180