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30084730 = 25131713613
BaseRepresentation
bin111001011000…
…0111001111010
32002121110111021
41302300321322
530200202410
62552453054
7513500404
oct162607172
962543437
1030084730
1115a89115
12a0aa18a
136304720
143dd1b74
152993eda
hex1cb0e7a

30084730 has 32 divisors (see below), whose sum is σ = 61753104. Its totient is φ = 10454016.

The previous prime is 30084721. The next prime is 30084731. The reversal of 30084730 is 3748003.

It can be written as a sum of positive squares in 8 ways, for example, as 2301289 + 27783441 = 1517^2 + 5271^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30084695 and 30084704.

It is not an unprimeable number, because it can be changed into a prime (30084731) 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, 4597 + ... + 9016.

Almost surely, 230084730 is an apocalyptic number.

30084730 is an abundant number, since it is smaller than the sum of its proper divisors (31668374).

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

30084730 is a wasteful number, since it uses less digits than its factorization.

30084730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13650.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 30084730 is about 5484.9548767515. The cubic root of 30084730 is about 311.0155043052.

The spelling of 30084730 in words is "thirty million, eighty-four thousand, seven hundred thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 130 170 221 442 1105 2210 13613 27226 68065 136130 176969 231421 353938 462842 884845 1157105 1769690 2314210 3008473 6016946 15042365 30084730