8215215432 has 16 divisors (see below), whose sum is σ = 20538038640. Its totient is φ = 2738405136.

The previous prime is 8215215431. The next prime is 8215215457. The reversal of 8215215432 is 2345125128.

It is a junction number, because it is equal to n+sod(n) for n = 8215215393 and 8215215402.

It is not an unprimeable number, because it can be changed into a prime (8215215431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171150298 + ... + 171150345.

It is an arithmetic number, because the mean of its divisors is an integer number (1283627415).

Almost surely, 2^8215215432 is an apocalyptic number.

It is an amenable number.

8215215432 is an abundant number, since it is smaller than the sum of its proper divisors (12322823208).

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

8215215432 is a wasteful number, since it uses less digits than its factorization.

8215215432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342300652 (or 342300648 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 8215215432 is about 90637.8256138131. The cubic root of 8215215432 is about 2017.7761553900.

The spelling of 8215215432 in words is "eight billion, two hundred fifteen million, two hundred fifteen thousand, four hundred thirty-two".