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228857541 = 311137223227
BaseRepresentation
bin11011010010000…
…01011011000101
3120221122011112020
431221001123011
5432041420131
634413113353
75446154103
oct1551013305
9527564466
10228857541
11108203070
1264788859
133854c283
1422574c73
1515159996
hexda416c5

228857541 has 32 divisors (see below), whose sum is σ = 338300928. Its totient is φ = 136467840.

The previous prime is 228857539. The next prime is 228857569. The reversal of 228857541 is 145758822.

It is not a de Polignac number, because 228857541 - 21 = 228857539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228857493 and 228857502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228857501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1008070 + ... + 1008296.

It is an arithmetic number, because the mean of its divisors is an integer number (10571904).

Almost surely, 2228857541 is an apocalyptic number.

It is an amenable number.

228857541 is a deficient number, since it is larger than the sum of its proper divisors (109443387).

228857541 is a wasteful number, since it uses less digits than its factorization.

228857541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its digits is 179200, while the sum is 42.

The square root of 228857541 is about 15128.0382403007. The cubic root of 228857541 is about 611.6764250246.

The spelling of 228857541 in words is "two hundred twenty-eight million, eight hundred fifty-seven thousand, five hundred forty-one".

Divisors: 1 3 11 33 137 223 227 411 669 681 1507 2453 2497 4521 7359 7491 30551 31099 50621 91653 93297 151863 336061 342089 556831 1008183 1026267 1670493 6935077 20805231 76285847 228857541