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70180385 = 5111276007
BaseRepresentation
bin1000010111011…
…01111000100001
311220001112101112
410023231320201
5120431233020
610544113105
71511344352
oct413557041
9156045345
1070180385
1136684620
121b605795
1311702972
14946bd29
1562642c5
hex42ede21

70180385 has 8 divisors (see below), whose sum is σ = 91872576. Its totient is φ = 51040240.

The previous prime is 70180367. The next prime is 70180387. The reversal of 70180385 is 58308107.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70180385 - 214 = 70164001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70180387) 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 7 ways as a sum of consecutive naturals, for example, 637949 + ... + 638058.

It is an arithmetic number, because the mean of its divisors is an integer number (11484072).

Almost surely, 270180385 is an apocalyptic number.

It is an amenable number.

70180385 is a deficient number, since it is larger than the sum of its proper divisors (21692191).

70180385 is a wasteful number, since it uses less digits than its factorization.

70180385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276023.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 70180385 is about 8377.3733950445. The cubic root of 70180385 is about 412.4822349252.

The spelling of 70180385 in words is "seventy million, one hundred eighty thousand, three hundred eighty-five".

Divisors: 1 5 11 55 1276007 6380035 14036077 70180385