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70030501 = 416128001
BaseRepresentation
bin1000010110010…
…01010010100101
311212202220210021
410023021102211
5120411434001
610540555141
71510151362
oct413112245
9155686707
1070030501
1136591a52
121b552ab1
131167c688
14942d469
156234ba1
hex42c94a5

70030501 has 8 divisors (see below), whose sum is σ = 72917208. Its totient is φ = 67200000.

The previous prime is 70030487. The next prime is 70030511. The reversal of 70030501 is 10503007.

It can be written as a sum of positive squares in 4 ways, for example, as 641601 + 69388900 = 801^2 + 8330^2 .

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 70030501 - 223 = 61641893 is a prime.

It is a super-2 number, since 2×700305012 = 9808542140622002, 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 (70030511) 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 7 ways as a sum of consecutive naturals, for example, 11500 + ... + 16501.

It is an arithmetic number, because the mean of its divisors is an integer number (9114651).

It is a Poulet number, since it divides 270030500-1.

Almost surely, 270030501 is an apocalyptic number.

It is an amenable number.

70030501 is a deficient number, since it is larger than the sum of its proper divisors (2886707).

70030501 is a wasteful number, since it uses less digits than its factorization.

70030501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28103.

The product of its (nonzero) digits is 105, while the sum is 16.

The square root of 70030501 is about 8368.4228502150. The cubic root of 70030501 is about 412.1883800141.

Adding to 70030501 its reverse (10503007), we get a palindrome (80533508).

The spelling of 70030501 in words is "seventy million, thirty thousand, five hundred one".

Divisors: 1 41 61 2501 28001 1148041 1708061 70030501