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228031008 = 25319125017
BaseRepresentation
bin11011001011101…
…11101000100000
3120220002011201220
431211313220200
5431333443013
634343255040
75436142302
oct1545675040
9526064656
10228031008
11107799087
126444a480
133831ccba
14223db972
1515044b23
hexd977a20

228031008 has 48 divisors (see below), whose sum is σ = 630090720. Its totient is φ = 72009216.

The previous prime is 228031007. The next prime is 228031043. The reversal of 228031008 is 800130822.

228031008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (228031007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60685 + ... + 64332.

It is an arithmetic number, because the mean of its divisors is an integer number (13126890).

Almost surely, 2228031008 is an apocalyptic number.

It is an amenable number.

228031008 is an abundant number, since it is smaller than the sum of its proper divisors (402059712).

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

228031008 is a wasteful number, since it uses less digits than its factorization.

228031008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125049 (or 125041 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 228031008 is about 15100.6956131166. The cubic root of 228031008 is about 610.9391678271.

The spelling of 228031008 in words is "two hundred twenty-eight million, thirty-one thousand, eight".

Divisors: 1 2 3 4 6 8 12 16 19 24 32 38 48 57 76 96 114 152 228 304 456 608 912 1824 125017 250034 375051 500068 750102 1000136 1500204 2000272 2375323 3000408 4000544 4750646 6000816 7125969 9501292 12001632 14251938 19002584 28503876 38005168 57007752 76010336 114015504 228031008