128473850 has 12 divisors (see below), whose sum is σ = 238961454. Its totient is φ = 51389520.

The previous prime is 128473843. The next prime is 128473897. The reversal of 128473850 is 58374821.

It can be written as a sum of positive squares in 3 ways, for example, as 102839881 + 25633969 = 10141^2 + 5063^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1284689 + ... + 1284788.

Almost surely, 2^128473850 is an apocalyptic number.

128473850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128473850 is a deficient number, since it is larger than the sum of its proper divisors (110487604).

128473850 is a wasteful number, since it uses less digits than its factorization.

128473850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569489 (or 2569484 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 128473850 is about 11334.6305630135. The cubic root of 128473850 is about 504.5895432866.

The spelling of 128473850 in words is "one hundred twenty-eight million, four hundred seventy-three thousand, eight hundred fifty".