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70882785 = 3253174969
BaseRepresentation
bin1000011100110…
…01010111100001
311221101012220100
410032121113201
5121121222120
611011133013
71520331231
oct416312741
9157335810
1070882785
1137014316
121b8a4169
13118ba59c
1495b1cc1
156352490
hex43995e1

70882785 has 24 divisors (see below), whose sum is σ = 123275880. Its totient is φ = 37677312.

The previous prime is 70882759. The next prime is 70882807. The reversal of 70882785 is 58728807.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 876096 + 70006689 = 936^2 + 8367^2 .

It is not a de Polignac number, because 70882785 - 28 = 70882529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70882785.

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 23 ways as a sum of consecutive naturals, for example, 11781 + ... + 16749.

It is an arithmetic number, because the mean of its divisors is an integer number (5136495).

Almost surely, 270882785 is an apocalyptic number.

It is an amenable number.

70882785 is a deficient number, since it is larger than the sum of its proper divisors (52393095).

70882785 is a wasteful number, since it uses less digits than its factorization.

70882785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5297 (or 5294 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 70882785 is about 8419.1914694940. The cubic root of 70882785 is about 413.8537780892.

The spelling of 70882785 in words is "seventy million, eight hundred eighty-two thousand, seven hundred eighty-five".

Divisors: 1 3 5 9 15 45 317 951 1585 2853 4755 4969 14265 14907 24845 44721 74535 223605 1575173 4725519 7875865 14176557 23627595 70882785