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231799460 = 22518164033
BaseRepresentation
bin11011101000011…
…11101010100100
3121011011122002012
431310033222210
5433320040320
635000133352
75513156114
oct1564175244
9534148065
10231799460
11109932402
1265767258
133903c359
1422add044
151553b4c5
hexdd0faa4

231799460 has 24 divisors (see below), whose sum is σ = 489475896. Its totient is φ = 92206080.

The previous prime is 231799457. The next prime is 231799481. The reversal of 231799460 is 64997132.

It can be written as a sum of positive squares in 4 ways, for example, as 18113536 + 213685924 = 4256^2 + 14618^2 .

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, 28397 + ... + 35636.

It is an arithmetic number, because the mean of its divisors is an integer number (20394829).

Almost surely, 2231799460 is an apocalyptic number.

231799460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231799460 is an abundant number, since it is smaller than the sum of its proper divisors (257676436).

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

231799460 is a wasteful number, since it uses less digits than its factorization.

231799460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64223 (or 64221 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 231799460 is about 15224.9617405102. The cubic root of 231799460 is about 614.2862674285.

The spelling of 231799460 in words is "two hundred thirty-one million, seven hundred ninety-nine thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 181 362 724 905 1810 3620 64033 128066 256132 320165 640330 1280660 11589973 23179946 46359892 57949865 115899730 231799460