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2228935780 = 225111446789
BaseRepresentation
bin1000010011011010…
…1101110001100100
312202100010200002001
42010312231301210
514031101421110
61005101455044
7106143433021
oct20466556144
95670120061
102228935780
11a441a3495
12522571484
13296a23116
14172050548
15d0a3563a
hex84dadc64

2228935780 has 12 divisors (see below), whose sum is σ = 4680765180. Its totient is φ = 891574304.

The previous prime is 2228935757. The next prime is 2228935801. The reversal of 2228935780 is 875398222.

It can be written as a sum of positive squares in 2 ways, for example, as 1077283684 + 1151652096 = 32822^2 + 33936^2 .

It is a super-2 number, since 2×22289357802 = 9936309422728416800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2228935780.

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, 55723375 + ... + 55723414.

It is an arithmetic number, because the mean of its divisors is an integer number (390063765).

Almost surely, 22228935780 is an apocalyptic number.

2228935780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2228935780 is an abundant number, since it is smaller than the sum of its proper divisors (2451829400).

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

2228935780 is a wasteful number, since it uses less digits than its factorization.

2228935780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111446798 (or 111446796 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2228935780 is about 47211.6064119831. The cubic root of 2228935780 is about 1306.2686937337.

The spelling of 2228935780 in words is "two billion, two hundred twenty-eight million, nine hundred thirty-five thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 111446789 222893578 445787156 557233945 1114467890 2228935780