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30680346 = 235113391
BaseRepresentation
bin111010100001…
…0010100011010
32010201201112010
41311002110122
530323232341
63013330350
7521531034
oct165022432
963651463
1030680346
1116355664
12a3369b6
136482868
144108c54
152a60716
hex1d4251a

30680346 has 8 divisors (see below), whose sum is σ = 61360704. Its totient is φ = 10226780.

The previous prime is 30680333. The next prime is 30680357. The reversal of 30680346 is 64308603.

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

30680346 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2556690 + ... + 2556701.

It is an arithmetic number, because the mean of its divisors is an integer number (7670088).

Almost surely, 230680346 is an apocalyptic number.

30680346 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30680346 is a wasteful number, since it uses less digits than its factorization.

30680346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113396.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 30680346 is about 5538.9842029022. The cubic root of 30680346 is about 313.0545961849.

Adding to 30680346 its reverse (64308603), we get a palindrome (94988949).

The spelling of 30680346 in words is "thirty million, six hundred eighty thousand, three hundred forty-six".

Divisors: 1 2 3 6 5113391 10226782 15340173 30680346