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228387349 = 14915110151
BaseRepresentation
bin11011001110011…
…10101000010101
3120220202021112201
431213032220111
5431431343344
634355044501
75442155221
oct1547165025
9526667481
10228387349
11107a11883
12645a0731
1338416258
1422491781
15150b54d4
hexd9cea15

228387349 has 8 divisors (see below), whose sum is σ = 231465600. Its totient is φ = 225330000.

The previous prime is 228387329. The next prime is 228387371. The reversal of 228387349 is 943783822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228387349 - 27 = 228387221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228387299 and 228387308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228387329) 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, 17424 + ... + 27574.

It is an arithmetic number, because the mean of its divisors is an integer number (28933200).

Almost surely, 2228387349 is an apocalyptic number.

It is an amenable number.

228387349 is a deficient number, since it is larger than the sum of its proper divisors (3078251).

228387349 is a wasteful number, since it uses less digits than its factorization.

228387349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10451.

The product of its digits is 580608, while the sum is 46.

The square root of 228387349 is about 15112.4898345706. The cubic root of 228387349 is about 611.2572376865.

The spelling of 228387349 in words is "two hundred twenty-eight million, three hundred eighty-seven thousand, three hundred forty-nine".

Divisors: 1 149 151 10151 22499 1512499 1532801 228387349