Search a number
-
+
70206471 = 3215535023
BaseRepresentation
bin1000010111101…
…00010000000111
311220002212011200
410023310100013
5120433101341
610544433543
71511513406
oct413642007
9156085150
1070206471
11366a2185
121b6188b3
13117117ba
14947763d
15626bdb6
hex42f4407

70206471 has 12 divisors (see below), whose sum is σ = 101494848. Its totient is φ = 46764864.

The previous prime is 70206469. The next prime is 70206491. The reversal of 70206471 is 17460207.

It is not a de Polignac number, because 70206471 - 21 = 70206469 is a prime.

It is a super-3 number, since 3×702064713 (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70206491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11466 + ... + 16488.

It is an arithmetic number, because the mean of its divisors is an integer number (8457904).

Almost surely, 270206471 is an apocalyptic number.

70206471 is a deficient number, since it is larger than the sum of its proper divisors (31288377).

70206471 is a wasteful number, since it uses less digits than its factorization.

70206471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6582 (or 6579 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 70206471 is about 8378.9301823085. The cubic root of 70206471 is about 412.5333350471.

Adding to 70206471 its reverse (17460207), we get a palindrome (87666678).

The spelling of 70206471 in words is "seventy million, two hundred six thousand, four hundred seventy-one".

Divisors: 1 3 9 1553 4659 5023 13977 15069 45207 7800719 23402157 70206471