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228418701 = 37104910369
BaseRepresentation
bin11011001110101…
…10010010001101
3120220210212112220
431213112102031
5431433344301
634355445553
75442345510
oct1547262215
9526725486
10228418701
11107a33395
12645b68b9
13384275c4
142249cd77
15150be936
hexd9d648d

228418701 has 16 divisors (see below), whose sum is σ = 348432000. Its totient is φ = 130387968.

The previous prime is 228418693. The next prime is 228418717. The reversal of 228418701 is 107814822.

It is a happy number.

It is not a de Polignac number, because 228418701 - 23 = 228418693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228418901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16845 + ... + 27213.

It is an arithmetic number, because the mean of its divisors is an integer number (21777000).

Almost surely, 2228418701 is an apocalyptic number.

228418701 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

228418701 is a deficient number, since it is larger than the sum of its proper divisors (120013299).

228418701 is a wasteful number, since it uses less digits than its factorization.

228418701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 228418701 is about 15113.5270866863. The cubic root of 228418701 is about 611.2852066322.

The spelling of 228418701 in words is "two hundred twenty-eight million, four hundred eighteen thousand, seven hundred one".

Divisors: 1 3 7 21 1049 3147 7343 10369 22029 31107 72583 217749 10877081 32631243 76139567 228418701