82236945 has 48 divisors (see below), whose sum is σ = 154441728. Its totient is φ = 37255680.

The previous prime is 82236943. The next prime is 82236961. The reversal of 82236945 is 54963228.

It is a happy number.

It is not a de Polignac number, because 82236945 - 2¹ = 82236943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82236943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92905 + ... + 93785.

It is an arithmetic number, because the mean of its divisors is an integer number (3217536).

Almost surely, 2^82236945 is an apocalyptic number.

It is an amenable number.

82236945 is a deficient number, since it is larger than the sum of its proper divisors (72204783).

82236945 is a wasteful number, since it uses less digits than its factorization.

82236945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1023 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 82236945 is about 9068.4587995976. The cubic root of 82236945 is about 434.8662027404.

The spelling of 82236945 in words is "eighty-two million, two hundred thirty-six thousand, nine hundred forty-five".