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30080180 = 22513115693
BaseRepresentation
bin111001010111…
…1110010110100
32002121020020202
41302233302310
530200031210
62552420032
7513451214
oct162576264
962536222
1030080180
1115a85759
12a0a7618
136302630
143dd0244
1529929a5
hex1cafcb4

30080180 has 24 divisors (see below), whose sum is σ = 68028072. Its totient is φ = 11106432.

The previous prime is 30080153. The next prime is 30080201. The reversal of 30080180 is 8108003.

It can be written as a sum of positive squares in 4 ways, for example, as 1926544 + 28153636 = 1388^2 + 5306^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57587 + ... + 58106.

It is an arithmetic number, because the mean of its divisors is an integer number (2834503).

Almost surely, 230080180 is an apocalyptic number.

It is an amenable number.

30080180 is an abundant number, since it is smaller than the sum of its proper divisors (37947892).

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

30080180 is a wasteful number, since it uses less digits than its factorization.

30080180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115715 (or 115713 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 30080180 is about 5484.5400901078. The cubic root of 30080180 is about 310.9998242366. Note that the first 3 decimals are identical.

Adding to 30080180 its reverse (8108003), we get a palindrome (38188183).

The spelling of 30080180 in words is "thirty million, eighty thousand, one hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 115693 231386 462772 578465 1156930 1504009 2313860 3008018 6016036 7520045 15040090 30080180