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2284815820 = 225716320113
BaseRepresentation
bin1000100000101111…
…1000010111001100
312220020021200002011
42020023320113030
514134403101240
61014415311004
7110422420420
oct21013702714
95806250064
102284815820
11a7279aa41
1253921b464
132a5489a31
14179638b80
15d58c26ea
hex882f85cc

2284815820 has 24 divisors (see below), whose sum is σ = 5483558304. Its totient is φ = 783365376.

The previous prime is 2284815811. The next prime is 2284815851. The reversal of 2284815820 is 285184822.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8159917 + ... + 8160196.

It is an arithmetic number, because the mean of its divisors is an integer number (228481596).

Almost surely, 22284815820 is an apocalyptic number.

2284815820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2284815820 is an abundant number, since it is smaller than the sum of its proper divisors (3198742484).

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

2284815820 is a wasteful number, since it uses less digits than its factorization.

2284815820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16320129 (or 16320127 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 40.

The square root of 2284815820 is about 47799.7470704605. The cubic root of 2284815820 is about 1317.0948927747.

The spelling of 2284815820 in words is "two billion, two hundred eighty-four million, eight hundred fifteen thousand, eight hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 16320113 32640226 65280452 81600565 114240791 163201130 228481582 326402260 456963164 571203955 1142407910 2284815820