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70102223 = 178739229
BaseRepresentation
bin1000010110110…
…10110011001111
311212220120011122
410023122303033
5120421232343
610542311155
71510600442
oct413326317
9155816148
1070102223
1136630924
121b5884bb
13116a6209
14944b659
15624b068
hex42daccf

70102223 has 4 divisors (see below), whose sum is σ = 70143240. Its totient is φ = 70061208.

The previous prime is 70102217. The next prime is 70102247. The reversal of 70102223 is 32220107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32220107 = 183117597.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-70102223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70102273) 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, 17828 + ... + 21401.

It is an arithmetic number, because the mean of its divisors is an integer number (17535810).

Almost surely, 270102223 is an apocalyptic number.

70102223 is a deficient number, since it is larger than the sum of its proper divisors (41017).

70102223 is a wasteful number, since it uses less digits than its factorization.

70102223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41016.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 70102223 is about 8372.7070293902. The cubic root of 70102223 is about 412.3290467615.

The spelling of 70102223 in words is "seventy million, one hundred two thousand, two hundred twenty-three".

Divisors: 1 1787 39229 70102223