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82230730 = 2547174959
BaseRepresentation
bin1001110011010…
…11110111001010
312201201202100121
410321223313022
5132022340410
612054253454
72015643511
oct471536712
9181652317
1082230730
114246518a
122365728a
131406184a
14acc7678
1573449da
hex4e6bdca

82230730 has 16 divisors (see below), whose sum is σ = 151165440. Its totient is φ = 32192272.

The previous prime is 82230721. The next prime is 82230737. The reversal of 82230730 is 3703228.

It is a happy number.

It is a super-3 number, since 3×822307303 (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82230695 and 82230704.

It is not an unprimeable number, because it can be changed into a prime (82230737) 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, 87010 + ... + 87949.

It is an arithmetic number, because the mean of its divisors is an integer number (9447840).

Almost surely, 282230730 is an apocalyptic number.

82230730 is a deficient number, since it is larger than the sum of its proper divisors (68934710).

82230730 is a wasteful number, since it uses less digits than its factorization.

82230730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175013.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 82230730 is about 9068.1161218855. The cubic root of 82230730 is about 434.8552475607.

Adding to 82230730 its reverse (3703228), we get a palindrome (85933958).

The spelling of 82230730 in words is "eighty-two million, two hundred thirty thousand, seven hundred thirty".

Divisors: 1 2 5 10 47 94 235 470 174959 349918 874795 1749590 8223073 16446146 41115365 82230730