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30228460 = 2251511423
BaseRepresentation
bin111001101001…
…1111111101100
32002212202122121
41303103333230
530214302320
62555522324
7514636423
oct163237754
962782577
1030228460
11160770a9
12a1593a4
136354c82
14402c2ba
1529c18aa
hex1cd3fec

30228460 has 12 divisors (see below), whose sum is σ = 63479808. Its totient is φ = 12091376.

The previous prime is 30228437. The next prime is 30228467. The reversal of 30228460 is 6482203.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30228467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755692 + ... + 755731.

It is an arithmetic number, because the mean of its divisors is an integer number (5289984).

Almost surely, 230228460 is an apocalyptic number.

It is an amenable number.

30228460 is an abundant number, since it is smaller than the sum of its proper divisors (33251348).

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

30228460 is a wasteful number, since it uses less digits than its factorization.

30228460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511432 (or 1511430 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 30228460 is about 5498.0414694689. The cubic root of 30228460 is about 311.5100105252.

The spelling of 30228460 in words is "thirty million, two hundred twenty-eight thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 1511423 3022846 6045692 7557115 15114230 30228460