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228074399 = 737978581
BaseRepresentation
bin11011001100000…
…10001110011111
3120220011101020222
431212002032133
5431341340044
634344231555
75436412640
oct1546021637
9526141228
10228074399
11107818743
126446b5bb
1338336987
142240d6c7
15150528ee
hexd98239f

228074399 has 8 divisors (see below), whose sum is σ = 260755488. Its totient is φ = 195418080.

The previous prime is 228074383. The next prime is 228074443. The reversal of 228074399 is 993470822.

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 228074399 - 24 = 228074383 is a prime.

It is a super-2 number, since 2×2280743992 = 104035862958422402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228074339) 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, 22289 + ... + 30869.

It is an arithmetic number, because the mean of its divisors is an integer number (32594436).

Almost surely, 2228074399 is an apocalyptic number.

228074399 is a deficient number, since it is larger than the sum of its proper divisors (32681089).

228074399 is an equidigital number, since it uses as much as digits as its factorization.

228074399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12385.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 228074399 is about 15102.1322666702. The cubic root of 228074399 is about 610.9779163294.

The spelling of 228074399 in words is "two hundred twenty-eight million, seventy-four thousand, three hundred ninety-nine".

Divisors: 1 7 3797 8581 26579 60067 32582057 228074399