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229280180 = 22511464009
BaseRepresentation
bin11011010101010…
…00100110110100
3120222102122021112
431222220212310
5432143431210
634430134152
75452564223
oct1552504664
9528378245
10229280180
11108471658
1264951358
133866975c
1422644cba
15151ded05
hexdaa89b4

229280180 has 12 divisors (see below), whose sum is σ = 481488420. Its totient is φ = 91712064.

The previous prime is 229280167. The next prime is 229280197. The reversal of 229280180 is 81082922.

229280180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 82482724 + 146797456 = 9082^2 + 12116^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 5731985 + ... + 5732024.

It is an arithmetic number, because the mean of its divisors is an integer number (40124035).

Almost surely, 2229280180 is an apocalyptic number.

229280180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229280180 is an abundant number, since it is smaller than the sum of its proper divisors (252208240).

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

229280180 is a wasteful number, since it uses less digits than its factorization.

229280180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11464018 (or 11464016 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 229280180 is about 15142.0005283318. Note that the first 3 decimals coincide. The cubic root of 229280180 is about 612.0527280242.

The spelling of 229280180 in words is "two hundred twenty-nine million, two hundred eighty thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 11464009 22928018 45856036 57320045 114640090 229280180