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228794994 = 23273174121
BaseRepresentation
bin11011010001100…
…10001001110010
3120221111222201200
431220302021302
5432032414434
634411512030
75445503541
oct1550621162
9527458650
10228794994
1110817007a
1264758616
133852996c
142255a158
1515146199
hexda32272

228794994 has 24 divisors (see below), whose sum is σ = 502516092. Its totient is φ = 75219840.

The previous prime is 228794989. The next prime is 228795023. The reversal of 228794994 is 499497822.

It can be written as a sum of positive squares in 2 ways, for example, as 226352025 + 2442969 = 15045^2 + 1563^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 228794994.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 85747 + ... + 88374.

Almost surely, 2228794994 is an apocalyptic number.

228794994 is an abundant number, since it is smaller than the sum of its proper divisors (273721098).

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

228794994 is a wasteful number, since it uses less digits than its factorization.

228794994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174202 (or 174199 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 228794994 is about 15125.9708448747. The cubic root of 228794994 is about 611.6206960166.

The spelling of 228794994 in words is "two hundred twenty-eight million, seven hundred ninety-four thousand, nine hundred ninety-four".

Divisors: 1 2 3 6 9 18 73 146 219 438 657 1314 174121 348242 522363 1044726 1567089 3134178 12710833 25421666 38132499 76264998 114397497 228794994