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228627693 = 3274777213
BaseRepresentation
bin11011010000010…
…01010011101101
3120221012111020100
431220021103231
5432012041233
634404141313
75444206020
oct1550112355
9527174210
10228627693
11108066408
1264697839
133849b778
14225151b7
1515111813
hexda094ed

228627693 has 24 divisors (see below), whose sum is σ = 385452288. Its totient is φ = 127863072.

The previous prime is 228627683. The next prime is 228627701. The reversal of 228627693 is 396726822.

228627693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228627693 - 210 = 228626669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228627643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35646 + ... + 41567.

It is an arithmetic number, because the mean of its divisors is an integer number (16060512).

Almost surely, 2228627693 is an apocalyptic number.

It is an amenable number.

228627693 is a deficient number, since it is larger than the sum of its proper divisors (156824595).

228627693 is a wasteful number, since it uses less digits than its factorization.

228627693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77273 (or 77270 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 228627693 is about 15120.4395769435. The cubic root of 228627693 is about 611.4715818784.

The spelling of 228627693 in words is "two hundred twenty-eight million, six hundred twenty-seven thousand, six hundred ninety-three".

Divisors: 1 3 7 9 21 47 63 141 329 423 987 2961 77213 231639 540491 694917 1621473 3629011 4864419 10887033 25403077 32661099 76209231 228627693