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228498744 = 233231812287
BaseRepresentation
bin11011001111010…
…01110100111000
3120220221221100110
431213221310320
5431443424434
634401304320
75443131045
oct1547516470
9526857313
10228498744
11107a88541
12646350a0
1338454b76
14224c01cc
15150d84e9
hexd9e9d38

228498744 has 64 divisors (see below), whose sum is σ = 599639040. Its totient is φ = 72420480.

The previous prime is 228498713. The next prime is 228498757. The reversal of 228498744 is 447894822.

It is a junction number, because it is equal to n+sod(n) for n = 228498693 and 228498702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98769 + ... + 101055.

It is an arithmetic number, because the mean of its divisors is an integer number (9369360).

Almost surely, 2228498744 is an apocalyptic number.

228498744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228498744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299819520).

228498744 is an abundant number, since it is smaller than the sum of its proper divisors (371140296).

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

228498744 is a wasteful number, since it uses less digits than its factorization.

228498744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500 (or 2496 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 228498744 is about 15116.1749129864. The cubic root of 228498744 is about 611.3566009436.

The spelling of 228498744 in words is "two hundred twenty-eight million, four hundred ninety-eight thousand, seven hundred forty-four".

Divisors: 1 2 3 4 6 8 12 23 24 46 69 92 138 181 184 276 362 543 552 724 1086 1448 2172 2287 4163 4344 4574 6861 8326 9148 12489 13722 16652 18296 24978 27444 33304 49956 52601 54888 99912 105202 157803 210404 315606 413947 420808 631212 827894 1241841 1262424 1655788 2483682 3311576 4967364 9520781 9934728 19041562 28562343 38083124 57124686 76166248 114249372 228498744