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228153015 = 32515233329
BaseRepresentation
bin11011001100101…
…01011010110111
3120220022101002200
431212111122313
5431401344030
634350035543
75440161066
oct1546253267
9526271080
10228153015
11107871812
12644a8bb3
13383636ac
14224301dd
151506ad60
hexd9956b7

228153015 has 24 divisors (see below), whose sum is σ = 395843760. Its totient is φ = 121565184.

The previous prime is 228153011. The next prime is 228153019. The reversal of 228153015 is 510351822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (228153011) and next prime (228153019).

It is not a de Polignac number, because 228153015 - 22 = 228153011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228153015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228153011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66871 + ... + 70199.

It is an arithmetic number, because the mean of its divisors is an integer number (16493490).

Almost surely, 2228153015 is an apocalyptic number.

228153015 is a deficient number, since it is larger than the sum of its proper divisors (167690745).

228153015 is a wasteful number, since it uses less digits than its factorization.

228153015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863 (or 4860 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 228153015 is about 15104.7348536808. The cubic root of 228153015 is about 611.0481085157.

The spelling of 228153015 in words is "two hundred twenty-eight million, one hundred fifty-three thousand, fifteen".

Divisors: 1 3 5 9 15 45 1523 3329 4569 7615 9987 13707 16645 22845 29961 49935 68535 149805 5070067 15210201 25350335 45630603 76051005 228153015