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30148090 = 257835189
BaseRepresentation
bin111001100000…
…0010111111010
32002201200101221
41303000113322
530204214330
62554102254
7514153210
oct163002772
962650357
1030148090
1116021785
12a11a98a
13632750b
14400acb0
1529a7b7a
hex1cc05fa

30148090 has 32 divisors (see below), whose sum is σ = 62778240. Its totient is φ = 10209984.

The previous prime is 30148067. The next prime is 30148093. The reversal of 30148090 is 9084103.

It is not an unprimeable number, because it can be changed into a prime (30148093) by changing a digit.

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, 3216 + ... + 8404.

It is an arithmetic number, because the mean of its divisors is an integer number (1961820).

Almost surely, 230148090 is an apocalyptic number.

30148090 is an abundant number, since it is smaller than the sum of its proper divisors (32630150).

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

30148090 is a wasteful number, since it uses less digits than its factorization.

30148090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 30148090 is about 5490.7276384829. The cubic root of 30148090 is about 311.2336894621.

The spelling of 30148090 in words is "thirty million, one hundred forty-eight thousand, ninety".

Divisors: 1 2 5 7 10 14 35 70 83 166 415 581 830 1162 2905 5189 5810 10378 25945 36323 51890 72646 181615 363230 430687 861374 2153435 3014809 4306870 6029618 15074045 30148090