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2228040290 = 257238911689
BaseRepresentation
bin1000010011001101…
…0011001001100010
312202021110011200202
42010303103021202
514030334242130
61005030345202
7106133013200
oct20463231142
95667404622
102228040290
11a43741713
125221bb202
1329679b648
14171c9a070
15d090a145
hex84cd3262

2228040290 has 48 divisors (see below), whose sum is σ = 4677636600. Its totient is φ = 761870592.

The previous prime is 2228040257. The next prime is 2228040319. The reversal of 2228040290 is 920408222.

It can be written as a sum of positive squares in 4 ways, for example, as 2084926921 + 143113369 = 45661^2 + 11963^2 .

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 23 ways as a sum of consecutive naturals, for example, 184766 + ... + 196454.

Almost surely, 22228040290 is an apocalyptic number.

2228040290 is an abundant number, since it is smaller than the sum of its proper divisors (2449596310).

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

2228040290 is a wasteful number, since it uses less digits than its factorization.

2228040290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12099 (or 12092 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2228040290 is about 47202.1216684166. The cubic root of 2228040290 is about 1306.0937362121.

The spelling of 2228040290 in words is "two billion, two hundred twenty-eight million, forty thousand, two hundred ninety".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 389 490 778 1945 2723 3890 5446 11689 13615 19061 23378 27230 38122 58445 81823 95305 116890 163646 190610 409115 572761 818230 1145522 2863805 4547021 5727610 9094042 22735105 31829147 45470210 63658294 159145735 222804029 318291470 445608058 1114020145 2228040290