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70238227 = 419167633
BaseRepresentation
bin1000010111111…
…00000000010011
311220011110201211
410023330000103
5120440110402
610545240551
71512005113
oct413740023
9156143654
1070238227
1136714024
121b633157
13117230a7
149485043
1562764d7
hex42fc013

70238227 has 4 divisors (see below), whose sum is σ = 70406280. Its totient is φ = 70070176.

The previous prime is 70238213. The next prime is 70238243. The reversal of 70238227 is 72283207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72283207 = 383188729.

It is a cyclic number.

It is not a de Polignac number, because 70238227 - 219 = 69713939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70238027) 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 3 ways as a sum of consecutive naturals, for example, 83398 + ... + 84235.

It is an arithmetic number, because the mean of its divisors is an integer number (17601570).

Almost surely, 270238227 is an apocalyptic number.

70238227 is a deficient number, since it is larger than the sum of its proper divisors (168053).

70238227 is a wasteful number, since it uses less digits than its factorization.

70238227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168052.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 70238227 is about 8380.8249593939. The cubic root of 70238227 is about 412.5955251068.

The spelling of 70238227 in words is "seventy million, two hundred thirty-eight thousand, two hundred twenty-seven".

Divisors: 1 419 167633 70238227