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30434693 = 233130621
BaseRepresentation
bin111010000011…
…0010110000101
32010021020112212
41310012112011
530242402233
63004153205
7516455612
oct164062605
963236485
1030434693
11161a8043
12a238805
1363c7ac3
144083509
152a12a48
hex1d06585

30434693 has 4 divisors (see below), whose sum is σ = 30565548. Its totient is φ = 30303840.

The previous prime is 30434639. The next prime is 30434699. The reversal of 30434693 is 39643403.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1940449 + 28494244 = 1393^2 + 5338^2 .

It is a cyclic number.

It is not a de Polignac number, because 30434693 - 214 = 30418309 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 (30434699) 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 3 ways as a sum of consecutive naturals, for example, 65078 + ... + 65543.

It is an arithmetic number, because the mean of its divisors is an integer number (7641387).

Almost surely, 230434693 is an apocalyptic number.

It is an amenable number.

30434693 is a deficient number, since it is larger than the sum of its proper divisors (130855).

30434693 is a wasteful number, since it uses less digits than its factorization.

30434693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130854.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 30434693 is about 5516.7647221900. The cubic root of 30434693 is about 312.2168289228.

The spelling of 30434693 in words is "thirty million, four hundred thirty-four thousand, six hundred ninety-three".

Divisors: 1 233 130621 30434693