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228871452 = 22319072621
BaseRepresentation
bin11011010010001…
…00110100011100
3120221122212121110
431221010310130
5432042341302
634413302020
75446242465
oct1551046434
9527585543
10228871452
11108212567
1264794910
13385556c4
1422579d6c
151515db6c
hexda44d1c

228871452 has 12 divisors (see below), whose sum is σ = 534033416. Its totient is φ = 76290480.

The previous prime is 228871427. The next prime is 228871457. The reversal of 228871452 is 254178822.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 228871452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228871457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9536299 + ... + 9536322.

Almost surely, 2228871452 is an apocalyptic number.

It is an amenable number.

228871452 is an abundant number, since it is smaller than the sum of its proper divisors (305161964).

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

228871452 is a wasteful number, since it uses less digits than its factorization.

228871452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19072628 (or 19072626 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 228871452 is about 15128.4980087251. The cubic root of 228871452 is about 611.6888182633.

The spelling of 228871452 in words is "two hundred twenty-eight million, eight hundred seventy-one thousand, four hundred fifty-two".

Divisors: 1 2 3 4 6 12 19072621 38145242 57217863 76290484 114435726 228871452