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70812844 = 2271249341
BaseRepresentation
bin1000011100010…
…00010010101100
311221020122221221
410032020102230
5121112002334
611005433124
71516620304
oct416102254
9157218857
1070812844
1136a76813
121b86b7a4
13118947bb
149594604
15633b8b4
hex43884ac

70812844 has 12 divisors (see below), whose sum is σ = 125668368. Its totient is φ = 34907600.

The previous prime is 70812839. The next prime is 70812881. The reversal of 70812844 is 44821807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124387 + ... + 124954.

It is an arithmetic number, because the mean of its divisors is an integer number (10472364).

Almost surely, 270812844 is an apocalyptic number.

It is an amenable number.

70812844 is a deficient number, since it is larger than the sum of its proper divisors (54855524).

70812844 is a wasteful number, since it uses less digits than its factorization.

70812844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249416 (or 249414 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 70812844 is about 8415.0367794799. The cubic root of 70812844 is about 413.7176149264.

The spelling of 70812844 in words is "seventy million, eight hundred twelve thousand, eight hundred forty-four".

Divisors: 1 2 4 71 142 284 249341 498682 997364 17703211 35406422 70812844