82411945 has 32 divisors (see below), whose sum is σ = 124830720. Its totient is φ = 50735040.

The previous prime is 82411907. The next prime is 82411991. The reversal of 82411945 is 54911428.

It is a happy number.

It is not a de Polignac number, because 82411945 - 2¹³ = 82403753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82411945.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30666 + ... + 33244.

It is an arithmetic number, because the mean of its divisors is an integer number (3900960).

Almost surely, 2^82411945 is an apocalyptic number.

It is an amenable number.

82411945 is a deficient number, since it is larger than the sum of its proper divisors (42418775).

82411945 is a wasteful number, since it uses less digits than its factorization.

82411945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685.

The product of its digits is 11520, while the sum is 34.

The square root of 82411945 is about 9078.1024999721. The cubic root of 82411945 is about 435.1744489019.

It can be divided in two parts, 824 and 11945, that added together give a square (12769 = 113²).

The spelling of 82411945 in words is "eighty-two million, four hundred eleven thousand, nine hundred forty-five".