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30223148 = 2219397673
BaseRepresentation
bin111001101001…
…0101100101100
32002212111100212
41303102230230
530214120043
62555441552
7514615064
oct163225454
962774325
1030223148
111607310a
12a1562b8
136352727
14402a3a4
1529c0018
hex1cd2b2c

30223148 has 12 divisors (see below), whose sum is σ = 55674360. Its totient is φ = 14316192.

The previous prime is 30223147. The next prime is 30223177. The reversal of 30223148 is 84132203.

It is not an unprimeable number, because it can be changed into a prime (30223147) 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 3 ways as a sum of consecutive naturals, for example, 198761 + ... + 198912.

It is an arithmetic number, because the mean of its divisors is an integer number (4639530).

Almost surely, 230223148 is an apocalyptic number.

30223148 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30223148 is a deficient number, since it is larger than the sum of its proper divisors (25451212).

30223148 is a wasteful number, since it uses less digits than its factorization.

30223148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397696 (or 397694 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 30223148 is about 5497.5583671299. The cubic root of 30223148 is about 311.4917624006.

The spelling of 30223148 in words is "thirty million, two hundred twenty-three thousand, one hundred forty-eight".

Divisors: 1 2 4 19 38 76 397673 795346 1590692 7555787 15111574 30223148