82045730 has 16 divisors (see below), whose sum is σ = 159042744. Its totient is φ = 30293760.

The previous prime is 82045729. The next prime is 82045739. The reversal of 82045730 is 3754028.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 52896529 + 29149201 = 7273^2 + 5399^2 .

It is a super-2 number, since 2×82045730² = 13463003622465800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82045693 and 82045702.

It is not an unprimeable number, because it can be changed into a prime (82045739) 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, 315431 + ... + 315690.

Almost surely, 2^82045730 is an apocalyptic number.

82045730 is a deficient number, since it is larger than the sum of its proper divisors (76997014).

82045730 is a wasteful number, since it uses less digits than its factorization.

82045730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631141.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 82045730 is about 9057.9098030396. The cubic root of 82045730 is about 434.5288950068.

Adding to 82045730 its reverse (3754028), we get a palindrome (85799758).

The spelling of 82045730 in words is "eighty-two million, forty-five thousand, seven hundred thirty".