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30226278 = 2323219031
BaseRepresentation
bin111001101001…
…1011101100110
32002212122122210
41303103131212
530214220103
62555504250
7514630155
oct163233546
962778583
1030226278
11160754a5
12a158086
136353c94
14402b59c
1529c0e03
hex1cd3766

30226278 has 16 divisors (see below), whose sum is σ = 63081216. Its totient is φ = 9637320.

The previous prime is 30226247. The next prime is 30226279. The reversal of 30226278 is 87262203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30226279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109378 + ... + 109653.

It is an arithmetic number, because the mean of its divisors is an integer number (3942576).

Almost surely, 230226278 is an apocalyptic number.

30226278 is an abundant number, since it is smaller than the sum of its proper divisors (32854938).

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

30226278 is a wasteful number, since it uses less digits than its factorization.

30226278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219059.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 30226278 is about 5497.8430315898. The cubic root of 30226278 is about 311.5025150370.

The spelling of 30226278 in words is "thirty million, two hundred twenty-six thousand, two hundred seventy-eight".

Divisors: 1 2 3 6 23 46 69 138 219031 438062 657093 1314186 5037713 10075426 15113139 30226278