82001406 has 16 divisors (see below), whose sum is σ = 164275200. Its totient is φ = 27288408.

The previous prime is 82001399. The next prime is 82001407. The reversal of 82001406 is 60410028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82001407) 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, 7326 + ... + 14753.

It is an arithmetic number, because the mean of its divisors is an integer number (10267200).

Almost surely, 2^82001406 is an apocalyptic number.

82001406 is an abundant number, since it is smaller than the sum of its proper divisors (82273794).

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

82001406 is a wasteful number, since it uses less digits than its factorization.

82001406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22703.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 82001406 is about 9055.4627711675. The cubic root of 82001406 is about 434.4506316281.

The spelling of 82001406 in words is "eighty-two million, one thousand, four hundred six".