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30680362 = 215340181
BaseRepresentation
bin111010100001…
…0010100101010
32010201201112201
41311002110222
530323232422
63013330414
7521531056
oct165022452
963651481
1030680362
1116355679
12a336a0a
13648287b
144108c66
152a60727
hex1d4252a

30680362 has 4 divisors (see below), whose sum is σ = 46020546. Its totient is φ = 15340180.

The previous prime is 30680357. The next prime is 30680399. The reversal of 30680362 is 26308603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26308603 = 130720129.

It can be written as a sum of positive squares in only one way, i.e., 20241001 + 10439361 = 4499^2 + 3231^2 .

It is a super-2 number, since 2×306803622 = 1882569224902088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30680362.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7670089 + ... + 7670092.

Almost surely, 230680362 is an apocalyptic number.

30680362 is a deficient number, since it is larger than the sum of its proper divisors (15340184).

30680362 is a wasteful number, since it uses less digits than its factorization.

30680362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15340183.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 30680362 is about 5538.9856472101. The cubic root of 30680362 is about 313.0546506049.

Adding to 30680362 its reverse (26308603), we get a palindrome (56988965).

The spelling of 30680362 in words is "thirty million, six hundred eighty thousand, three hundred sixty-two".

Divisors: 1 2 15340181 30680362