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30434345 = 56086869
BaseRepresentation
bin111010000011…
…0010000101001
32010021020001222
41310012100221
530242344340
63004151425
7516454604
oct164062051
963236058
1030434345
11161a7857
12a238575
1363c78b6
14408333b
152a128b5
hex1d06429

30434345 has 4 divisors (see below), whose sum is σ = 36521220. Its totient is φ = 24347472.

The previous prime is 30434323. The next prime is 30434347. The reversal of 30434345 is 54343403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54343403 = 311753013.

It can be written as a sum of positive squares in 2 ways, for example, as 12524521 + 17909824 = 3539^2 + 4232^2 .

It is a cyclic number.

It is not a de Polignac number, because 30434345 - 218 = 30172201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30434347) 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, 3043430 + ... + 3043439.

It is an arithmetic number, because the mean of its divisors is an integer number (9130305).

Almost surely, 230434345 is an apocalyptic number.

It is an amenable number.

30434345 is a deficient number, since it is larger than the sum of its proper divisors (6086875).

30434345 is an equidigital number, since it uses as much as digits as its factorization.

30434345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086874.

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 30434345 is about 5516.7331818749. The cubic root of 30434345 is about 312.2156389226.

Adding to 30434345 its reverse (54343403), we get a palindrome (84777748).

The spelling of 30434345 in words is "thirty million, four hundred thirty-four thousand, three hundred forty-five".

Divisors: 1 5 6086869 30434345