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82430748 = 22322289743
BaseRepresentation
bin1001110100111…
…00101100011100
312202002220201200
410322130230130
5132100240443
612102435500
72020435611
oct472345434
9182086650
1082430748
1142591494
1223732b90
13141018ba
14ad3a508
157383dd3
hex4e9cb1c

82430748 has 18 divisors (see below), whose sum is σ = 208366704. Its totient is φ = 27476904.

The previous prime is 82430743. The next prime is 82430813. The reversal of 82430748 is 84703428.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2289743 = 82430748 / (8 + 2 + 4 + 3 + 0 + 7 + 4 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82430743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1144836 + ... + 1144907.

It is an arithmetic number, because the mean of its divisors is an integer number (11575928).

Almost surely, 282430748 is an apocalyptic number.

It is an amenable number.

82430748 is an abundant number, since it is smaller than the sum of its proper divisors (125935956).

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

82430748 is a wasteful number, since it uses less digits than its factorization.

82430748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289753 (or 2289748 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 82430748 is about 9079.1380648165. The cubic root of 82430748 is about 435.2075426601.

The spelling of 82430748 in words is "eighty-two million, four hundred thirty thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 2289743 4579486 6869229 9158972 13738458 20607687 27476916 41215374 82430748