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30680338 = 2131180013
BaseRepresentation
bin111010100001…
…0010100010010
32010201201111211
41311002110102
530323232323
63013330334
7521531023
oct165022422
963651454
1030680338
1116355657
12a3369aa
136482860
144108c4a
152a6070d
hex1d42512

30680338 has 8 divisors (see below), whose sum is σ = 49560588. Its totient is φ = 14160144.

The previous prime is 30680333. The next prime is 30680357. The reversal of 30680338 is 83308603.

It can be written as a sum of positive squares in 2 ways, for example, as 30437289 + 243049 = 5517^2 + 493^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30680333) 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, 589981 + ... + 590032.

Almost surely, 230680338 is an apocalyptic number.

30680338 is a deficient number, since it is larger than the sum of its proper divisors (18880250).

30680338 is a wasteful number, since it uses less digits than its factorization.

30680338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180028.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 30680338 is about 5538.9834807481. The cubic root of 30680338 is about 313.0545689749.

The spelling of 30680338 in words is "thirty million, six hundred eighty thousand, three hundred thirty-eight".

Divisors: 1 2 13 26 1180013 2360026 15340169 30680338