82406445 has 24 divisors (see below), whose sum is σ = 144929568. Its totient is φ = 39953760.

The previous prime is 82406419. The next prime is 82406453. The reversal of 82406445 is 54460428.

It is not a de Polignac number, because 82406445 - 2⁵ = 82406413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20887 + ... + 24516.

It is an arithmetic number, because the mean of its divisors is an integer number (6038732).

Almost surely, 2^82406445 is an apocalyptic number.

It is an amenable number.

82406445 is a deficient number, since it is larger than the sum of its proper divisors (62523123).

82406445 is a wasteful number, since it uses less digits than its factorization.

82406445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45433 (or 45422 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 82406445 is about 9077.7995681773. The cubic root of 82406445 is about 435.1647678105.

The spelling of 82406445 in words is "eighty-two million, four hundred six thousand, four hundred forty-five".