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30655130 = 2511436481
BaseRepresentation
bin111010011110…
…0001010011010
32010200102221012
41310330022122
530321431010
63013013522
7521364362
oct164741232
963612835
1030655130
1116338720
12a3242a2
13647423c
1440dd9a2
152a58005
hex1d3c29a

30655130 has 32 divisors (see below), whose sum is σ = 61604928. Its totient is φ = 10886400.

The previous prime is 30655127. The next prime is 30655171. The reversal of 30655130 is 3155603.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30655096 and 30655105.

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 15 ways as a sum of consecutive naturals, for example, 1490 + ... + 7970.

It is an arithmetic number, because the mean of its divisors is an integer number (1925154).

Almost surely, 230655130 is an apocalyptic number.

30655130 is an abundant number, since it is smaller than the sum of its proper divisors (30949798).

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

30655130 is a wasteful number, since it uses less digits than its factorization.

30655130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6542.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 30655130 is about 5536.7075053681. The cubic root of 30655130 is about 312.9688067530.

The spelling of 30655130 in words is "thirty million, six hundred fifty-five thousand, one hundred thirty".

Divisors: 1 2 5 10 11 22 43 55 86 110 215 430 473 946 2365 4730 6481 12962 32405 64810 71291 142582 278683 356455 557366 712910 1393415 2786830 3065513 6131026 15327565 30655130