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70814015 = 5731311481
BaseRepresentation
bin1000011100010…
…00100100111111
311221020201120022
410032020210333
5121112022030
611005442355
71516623566
oct416104477
9157221508
1070814015
1136a77688
121b8703bb
13118951ac
149594bdd
15633bde5
hex438893f

70814015 has 16 divisors (see below), whose sum is σ = 86857056. Its totient is φ = 55411200.

The previous prime is 70813979. The next prime is 70814021. The reversal of 70814015 is 51041807.

It is not a de Polignac number, because 70814015 - 28 = 70813759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 47075 + ... + 48555.

It is an arithmetic number, because the mean of its divisors is an integer number (5428566).

Almost surely, 270814015 is an apocalyptic number.

70814015 is a deficient number, since it is larger than the sum of its proper divisors (16043041).

70814015 is a wasteful number, since it uses less digits than its factorization.

70814015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 70814015 is about 8415.1063570225. The cubic root of 70814015 is about 413.7198954009.

The spelling of 70814015 in words is "seventy million, eight hundred fourteen thousand, fifteen".

Divisors: 1 5 73 131 365 655 1481 7405 9563 47815 108113 194011 540565 970055 14162803 70814015