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30680754 = 2313478369
BaseRepresentation
bin111010100001…
…0011010110010
32010201202002020
41311002122302
530323241004
63013332310
7521532156
oct165023262
963652066
1030680754
11163559a5
12a337096
136482ac0
144109066
152a608d9
hex1d426b2

30680754 has 32 divisors (see below), whose sum is σ = 67495680. Its totient is φ = 9238272.

The previous prime is 30680747. The next prime is 30680759. The reversal of 30680754 is 45708603.

It is not an unprimeable number, because it can be changed into a prime (30680759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519 + ... + 7850.

It is an arithmetic number, because the mean of its divisors is an integer number (2109240).

Almost surely, 230680754 is an apocalyptic number.

30680754 is an abundant number, since it is smaller than the sum of its proper divisors (36814926).

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

30680754 is a wasteful number, since it uses less digits than its factorization.

30680754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 30680754 is about 5539.0210326374. The cubic root of 30680754 is about 313.0559838888.

The spelling of 30680754 in words is "thirty million, six hundred eighty thousand, seven hundred fifty-four".

Divisors: 1 2 3 6 13 26 39 47 78 94 141 282 611 1222 1833 3666 8369 16738 25107 50214 108797 217594 326391 393343 652782 786686 1180029 2360058 5113459 10226918 15340377 30680754