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228137848 = 2373390647
BaseRepresentation
bin11011001100100…
…01101101111000
3120220021121021221
431212101231320
5431400402343
634345441424
75440065631
oct1546215570
9526247257
10228137848
11107861384
12644a0274
1338359813
1422428888
15150665ed
hexd991b78

228137848 has 16 divisors (see below), whose sum is σ = 433619280. Its totient is φ = 112506048.

The previous prime is 228137821. The next prime is 228137857. The reversal of 228137848 is 848731822.

It is a super-2 number, since 2×2281378482 = 104093755380142208, which contains 22 as substring.

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, 194740 + ... + 195907.

It is an arithmetic number, because the mean of its divisors is an integer number (27101205).

Almost surely, 2228137848 is an apocalyptic number.

It is an amenable number.

228137848 is a deficient number, since it is larger than the sum of its proper divisors (205481432).

228137848 is a wasteful number, since it uses less digits than its factorization.

228137848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390726 (or 390722 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 228137848 is about 15104.2327842231. The cubic root of 228137848 is about 611.0345679363.

The spelling of 228137848 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, eight hundred forty-eight".

Divisors: 1 2 4 8 73 146 292 584 390647 781294 1562588 3125176 28517231 57034462 114068924 228137848