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228142382 = 21323381509
BaseRepresentation
bin11011001100100…
…10110100101110
3120220021211111212
431212102310232
5431401024012
634345514422
75440115066
oct1546226456
9526254455
10228142382
11107864826
12644a2a12
133835b8c0
142242a3a6
1515067b22
hexd992d2e

228142382 has 16 divisors (see below), whose sum is σ = 384562080. Its totient is φ = 100718112.

The previous prime is 228142337. The next prime is 228142403. The reversal of 228142382 is 283241822.

It is a congruent number.

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, 190157 + ... + 191352.

It is an arithmetic number, because the mean of its divisors is an integer number (24035130).

Almost surely, 2228142382 is an apocalyptic number.

228142382 is a deficient number, since it is larger than the sum of its proper divisors (156419698).

228142382 is a wasteful number, since it uses less digits than its factorization.

228142382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381547.

The product of its digits is 12288, while the sum is 32.

The square root of 228142382 is about 15104.3828738549. The cubic root of 228142382 is about 611.0386157995.

The spelling of 228142382 in words is "two hundred twenty-eight million, one hundred forty-two thousand, three hundred eighty-two".

Divisors: 1 2 13 23 26 46 299 598 381509 763018 4959617 8774707 9919234 17549414 114071191 228142382