82213470 has 24 divisors (see below), whose sum is σ = 213755256. Its totient is φ = 21923568.

The previous prime is 82213433. The next prime is 82213493. The reversal of 82213470 is 7431228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 456652 + ... + 456831.

It is an arithmetic number, because the mean of its divisors is an integer number (8906469).

Almost surely, 2^82213470 is an apocalyptic number.

82213470 is an abundant number, since it is smaller than the sum of its proper divisors (131541786).

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

82213470 is a wasteful number, since it uses less digits than its factorization.

82213470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913496 (or 913493 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 82213470 is about 9067.1643858485. The cubic root of 82213470 is about 434.8248204654.

Adding to 82213470 its reverse (7431228), we get a palindrome (89644698).

The spelling of 82213470 in words is "eighty-two million, two hundred thirteen thousand, four hundred seventy".