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70180393 = 220731799
BaseRepresentation
bin1000010111011…
…01111000101001
311220001112101211
410023231320221
5120431233033
610544113121
71511344363
oct413557051
9156045354
1070180393
1136684628
121b6057a1
131170297a
14946bd33
1562642cd
hex42ede29

70180393 has 4 divisors (see below), whose sum is σ = 70214400. Its totient is φ = 70146388.

The previous prime is 70180387. The next prime is 70180417. The reversal of 70180393 is 39308107.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39308107 = 373910513.

It is a cyclic number.

It is not a de Polignac number, because 70180393 - 29 = 70179881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70180303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13693 + ... + 18106.

It is an arithmetic number, because the mean of its divisors is an integer number (17553600).

Almost surely, 270180393 is an apocalyptic number.

It is an amenable number.

70180393 is a deficient number, since it is larger than the sum of its proper divisors (34007).

70180393 is a wasteful number, since it uses less digits than its factorization.

70180393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34006.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 70180393 is about 8377.3738725211. The cubic root of 70180393 is about 412.4822505984.

The spelling of 70180393 in words is "seventy million, one hundred eighty thousand, three hundred ninety-three".

Divisors: 1 2207 31799 70180393