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30157953029 = 171773997237
BaseRepresentation
bin11100000101100011…
…011101100000000101
32212211202111202012022
4130011203131200011
5443230413444104
621504313332525
72115225241211
oct340543354005
985752452168
1030157953029
1111876418526
125a17a07145
132ac8019c29
141661403941
15bb7929bbe
hex7058dd805

30157953029 has 4 divisors (see below), whose sum is σ = 31931950284. Its totient is φ = 28383955776.

The previous prime is 30157953013. The next prime is 30157953043. The reversal of 30157953029 is 92035975103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92035975103 = 173353107891.

It can be written as a sum of positive squares in 2 ways, for example, as 26951788900 + 3206164129 = 164170^2 + 56623^2 .

It is a cyclic number.

It is not a de Polignac number, because 30157953029 - 24 = 30157953013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30157953929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886998602 + ... + 886998635.

It is an arithmetic number, because the mean of its divisors is an integer number (7982987571).

Almost surely, 230157953029 is an apocalyptic number.

It is an amenable number.

30157953029 is a deficient number, since it is larger than the sum of its proper divisors (1773997255).

30157953029 is a wasteful number, since it uses less digits than its factorization.

30157953029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773997254.

The product of its (nonzero) digits is 255150, while the sum is 44.

The spelling of 30157953029 in words is "thirty billion, one hundred fifty-seven million, nine hundred fifty-three thousand, twenty-nine".

Divisors: 1 17 1773997237 30157953029