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228612824 = 231123112951
BaseRepresentation
bin11011010000001…
…01101011011000
3120221011201211122
431220011223120
5432011102244
634403544412
75444114456
oct1550055330
9527151748
10228612824
11108056220
126468b108
1338494a7b
142250d9d6
151510c1ee
hexda05ad8

228612824 has 32 divisors (see below), whose sum is σ = 487952640. Its totient is φ = 99396000.

The previous prime is 228612781. The next prime is 228612851. The reversal of 228612824 is 428216822.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 54452 + ... + 58499.

It is an arithmetic number, because the mean of its divisors is an integer number (15248520).

Almost surely, 2228612824 is an apocalyptic number.

It is an amenable number.

228612824 is an abundant number, since it is smaller than the sum of its proper divisors (259339816).

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

228612824 is a wasteful number, since it uses less digits than its factorization.

228612824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112991 (or 112987 counting only the distinct ones).

The product of its digits is 24576, while the sum is 35.

The square root of 228612824 is about 15119.9478835081. The cubic root of 228612824 is about 611.4583257297.

The spelling of 228612824 in words is "two hundred twenty-eight million, six hundred twelve thousand, eight hundred twenty-four".

Divisors: 1 2 4 8 11 22 23 44 46 88 92 184 253 506 1012 2024 112951 225902 451804 903608 1242461 2484922 2597873 4969844 5195746 9939688 10391492 20782984 28576603 57153206 114306412 228612824