82307145 has 32 divisors (see below), whose sum is σ = 141264000. Its totient is φ = 40794624.

The previous prime is 82307143. The next prime is 82307171. The reversal of 82307145 is 54170328.

It is not a de Polignac number, because 82307145 - 2¹ = 82307143 is a prime.

It is a super-2 number, since 2×82307145² = 13548932236102050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82307143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12381 + ... + 17829.

It is an arithmetic number, because the mean of its divisors is an integer number (4414500).

Almost surely, 2^82307145 is an apocalyptic number.

It is an amenable number.

82307145 is a deficient number, since it is larger than the sum of its proper divisors (58956855).

82307145 is a wasteful number, since it uses less digits than its factorization.

82307145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 82307145 is about 9072.3285324111. The cubic root of 82307145 is about 434.9899059621.

The spelling of 82307145 in words is "eighty-two million, three hundred seven thousand, one hundred forty-five".