Search a number
-
+
228571430 = 25145315731
BaseRepresentation
bin11011001111110…
…11100100100110
3120221002122001112
431213323210212
5432003241210
634403025022
75443553003
oct1547734446
9527078045
10228571430
1110802810a
126466b172
133847bc89
14224dc8aa
15150eed05
hexd9fb926

228571430 has 16 divisors (see below), whose sum is σ = 411737904. Its totient is φ = 91359840.

The previous prime is 228571423. The next prime is 228571471. The reversal of 228571430 is 34175822.

It is a super-2 number, since 2×2285714302 = 104489797224489800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 6665 + ... + 22395.

It is an arithmetic number, because the mean of its divisors is an integer number (25733619).

Almost surely, 2228571430 is an apocalyptic number.

228571430 is a deficient number, since it is larger than the sum of its proper divisors (183166474).

228571430 is a wasteful number, since it uses less digits than its factorization.

228571430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17191.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 228571430 is about 15118.5789676146. The cubic root of 228571430 is about 611.4214187396.

The spelling of 228571430 in words is "two hundred twenty-eight million, five hundred seventy-one thousand, four hundred thirty".

Divisors: 1 2 5 10 1453 2906 7265 14530 15731 31462 78655 157310 22857143 45714286 114285715 228571430