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228824780 = 22511441239
BaseRepresentation
bin11011010001110…
…01011011001100
3120221120111120212
431220321123030
5432034343110
634412301552
75445656432
oct1550713314
9527514525
10228824780
11108190498
12647718b8
133853a3a2
1422566d52
151514ee05
hexda396cc

228824780 has 12 divisors (see below), whose sum is σ = 480532080. Its totient is φ = 91529904.

The previous prime is 228824753. The next prime is 228824839. The reversal of 228824780 is 87428822.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5720600 + ... + 5720639.

It is an arithmetic number, because the mean of its divisors is an integer number (40044340).

Almost surely, 2228824780 is an apocalyptic number.

228824780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228824780 is an abundant number, since it is smaller than the sum of its proper divisors (251707300).

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

228824780 is a wasteful number, since it uses less digits than its factorization.

228824780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11441248 (or 11441246 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 228824780 is about 15126.9554107890. The cubic root of 228824780 is about 611.6472364334.

The spelling of 228824780 in words is "two hundred twenty-eight million, eight hundred twenty-four thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 11441239 22882478 45764956 57206195 114412390 228824780