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231426748 = 22716350707
BaseRepresentation
bin11011100101101…
…00101010111100
3121010110200211001
431302310222330
5433221123443
634544140044
75510044360
oct1562645274
9533420731
10231426748
111096a8383
1265607624
1338c3b807
1422a432a0
15154b5d4d
hexdcb4abc

231426748 has 24 divisors (see below), whose sum is σ = 465702272. Its totient is φ = 98572464.

The previous prime is 231426721. The next prime is 231426751. The reversal of 231426748 is 847624132.

It is a congruent number.

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, 20790 + ... + 29917.

Almost surely, 2231426748 is an apocalyptic number.

231426748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231426748 is an abundant number, since it is smaller than the sum of its proper divisors (234275524).

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

231426748 is a wasteful number, since it uses less digits than its factorization.

231426748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50881 (or 50879 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 231426748 is about 15212.7166541680. The cubic root of 231426748 is about 613.9568523899.

It can be divided in two parts, 23142 and 6748, that added together give a triangular number (29890 = T244).

The spelling of 231426748 in words is "two hundred thirty-one million, four hundred twenty-six thousand, seven hundred forty-eight".

Divisors: 1 2 4 7 14 28 163 326 652 1141 2282 4564 50707 101414 202828 354949 709898 1419796 8265241 16530482 33060964 57856687 115713374 231426748