128406016 has 20 divisors (see below), whose sum is σ = 256562262. Its totient is φ = 64202752.

The previous prime is 128406001. The next prime is 128406029. The reversal of 128406016 is 610604821.

It can be written as a sum of positive squares in only one way, i.e., 86415616 + 41990400 = 9296^2 + 6480^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124885 + ... + 125908.

Almost surely, 2^128406016 is an apocalyptic number.

128406016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128406016 is a deficient number, since it is larger than the sum of its proper divisors (128156246).

128406016 is an frugal number, since it uses more digits than its factorization.

128406016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250811 (or 250795 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 128406016 is about 11331.6378339585. The cubic root of 128406016 is about 504.5007201447.

The spelling of 128406016 in words is "one hundred twenty-eight million, four hundred six thousand, sixteen".