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30672315 = 325681607
BaseRepresentation
bin111010100000…
…0010110111011
32010201022111200
41311000112323
530323003230
63013225243
7521465442
oct165002673
963638450
1030672315
111634a623
12a332223
13647bccb
144105d59
152a5d160
hex1d405bb

30672315 has 12 divisors (see below), whose sum is σ = 53165424. Its totient is φ = 16358544.

The previous prime is 30672307. The next prime is 30672347. The reversal of 30672315 is 51327603.

It is a happy number.

It is not a de Polignac number, because 30672315 - 23 = 30672307 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340759 + ... + 340848.

It is an arithmetic number, because the mean of its divisors is an integer number (4430452).

Almost surely, 230672315 is an apocalyptic number.

30672315 is a deficient number, since it is larger than the sum of its proper divisors (22493109).

30672315 is a wasteful number, since it uses less digits than its factorization.

30672315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681618 (or 681615 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 30672315 is about 5538.2592030348. The cubic root of 30672315 is about 313.0272783611.

Adding to 30672315 its reverse (51327603), we get a palindrome (81999918).

The spelling of 30672315 in words is "thirty million, six hundred seventy-two thousand, three hundred fifteen".

Divisors: 1 3 5 9 15 45 681607 2044821 3408035 6134463 10224105 30672315