8646432428 has 6 divisors (see below), whose sum is σ = 15131256756. Its totient is φ = 4323216212.

The previous prime is 8646432401. The next prime is 8646432437. The reversal of 8646432428 is 8242346468.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080804050 + ... + 1080804057.

It is an arithmetic number, because the mean of its divisors is an integer number (2521876126).

Almost surely, 2^8646432428 is an apocalyptic number.

It is an amenable number.

8646432428 is a deficient number, since it is larger than the sum of its proper divisors (6484824328).

8646432428 is a wasteful number, since it uses less digits than its factorization.

8646432428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161608111 (or 2161608109 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 47.

The square root of 8646432428 is about 92986.1948248233. The cubic root of 8646432428 is about 2052.4802364125.

The spelling of 8646432428 in words is "eight billion, six hundred forty-six million, four hundred thirty-two thousand, four hundred twenty-eight".