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228122430 = 2357604081
BaseRepresentation
bin11011001100011…
…01111100111110
3120220020211010220
431212031330332
5431344404210
634345242210
75440002654
oct1546157476
9526224126
10228122430
11107850838
1264493366
13383527b3
1422422dd4
1515061c70
hexd98df3e

228122430 has 16 divisors (see below), whose sum is σ = 547493904. Its totient is φ = 60832640.

The previous prime is 228122423. The next prime is 228122431. The reversal of 228122430 is 34221822.

It is a self number, because there is not a number n which added to its sum of digits gives 228122430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228122431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3802011 + ... + 3802070.

It is an arithmetic number, because the mean of its divisors is an integer number (34218369).

Almost surely, 2228122430 is an apocalyptic number.

228122430 is an abundant number, since it is smaller than the sum of its proper divisors (319371474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228122430 is a wasteful number, since it uses less digits than its factorization.

228122430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7604091.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 228122430 is about 15103.7223888682. The cubic root of 228122430 is about 611.0208026576.

The spelling of 228122430 in words is "two hundred twenty-eight million, one hundred twenty-two thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 7604081 15208162 22812243 38020405 45624486 76040810 114061215 228122430