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70803919 = 5310871229
BaseRepresentation
bin1000011100001…
…10000111001111
311221020012201101
410032012013033
5121111211134
611005323531
71516552264
oct416060717
9157205641
1070803919
1136a7003a
121b8665a7
1311890714
14959126b
156338e14
hex43861cf

70803919 has 8 divisors (see below), whose sum is σ = 72264960. Its totient is φ = 69347616.

The previous prime is 70803917. The next prime is 70803983. The reversal of 70803919 is 91930807.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70803919 - 21 = 70803917 is a prime.

It is a super-2 number, since 2×708039192 = 10026389891517122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70803911) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 56997 + ... + 58225.

It is an arithmetic number, because the mean of its divisors is an integer number (9033120).

Almost surely, 270803919 is an apocalyptic number.

70803919 is a deficient number, since it is larger than the sum of its proper divisors (1461041).

70803919 is a wasteful number, since it uses less digits than its factorization.

70803919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 70803919 is about 8414.5064620571. The cubic root of 70803919 is about 413.7002330286.

The spelling of 70803919 in words is "seventy million, eight hundred three thousand, nine hundred nineteen".

Divisors: 1 53 1087 1229 57611 65137 1335923 70803919