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228927357 = 338478791
BaseRepresentation
bin11011010010100…
…10011101111101
3120221202201022000
431221102131331
5432101133412
634414412513
75446564461
oct1551223575
9527681260
10228927357
1110825056a
1264801139
1338574c99
14225924a1
15151704dc
hexda5277d

228927357 has 8 divisors (see below), whose sum is σ = 339151680. Its totient is φ = 152618220.

The previous prime is 228927341. The next prime is 228927367. The reversal of 228927357 is 753729822.

It is not a de Polignac number, because 228927357 - 24 = 228927341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228927367) 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 7 ways as a sum of consecutive naturals, for example, 4239369 + ... + 4239422.

It is an arithmetic number, because the mean of its divisors is an integer number (42393960).

Almost surely, 2228927357 is an apocalyptic number.

228927357 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

228927357 is a deficient number, since it is larger than the sum of its proper divisors (110224323).

228927357 is an equidigital number, since it uses as much as digits as its factorization.

228927357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478800 (or 8478794 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 228927357 is about 15130.3455677655. The cubic root of 228927357 is about 611.7386186776.

It can be divided in two parts, 2289 and 27357, that added together give a triangular number (29646 = T243).

The spelling of 228927357 in words is "two hundred twenty-eight million, nine hundred twenty-seven thousand, three hundred fifty-seven".

Divisors: 1 3 9 27 8478791 25436373 76309119 228927357