82019478 has 16 divisors (see below), whose sum is σ = 164180160. Its totient is φ = 27316296.

The previous prime is 82019477. The next prime is 82019501. The reversal of 82019478 is 87491028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82019471) 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, 2613 + ... + 13071.

It is an arithmetic number, because the mean of its divisors is an integer number (10261260).

Almost surely, 2^82019478 is an apocalyptic number.

82019478 is an abundant number, since it is smaller than the sum of its proper divisors (82160682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82019478 is a wasteful number, since it uses less digits than its factorization.

82019478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11771.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 82019478 is about 9056.4605669102. The cubic root of 82019478 is about 434.4825449634.

The spelling of 82019478 in words is "eighty-two million, nineteen thousand, four hundred seventy-eight".