128077850 has 24 divisors (see below), whose sum is σ = 244039068. Its totient is φ = 49980800.

The previous prime is 128077837. The next prime is 128077871. The reversal of 128077850 is 58770821.

It can be written as a sum of positive squares in 6 ways, for example, as 4490161 + 123587689 = 2119^2 + 11117^2 .

It is a hoax number, since the sum of its digits (38) 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 in 11 ways as a sum of consecutive naturals, for example, 29189 + ... + 33288.

Almost surely, 2^128077850 is an apocalyptic number.

128077850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128077850 is a deficient number, since it is larger than the sum of its proper divisors (115961218).

128077850 is a wasteful number, since it uses less digits than its factorization.

128077850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62530 (or 62525 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 128077850 is about 11317.1484924428. The cubic root of 128077850 is about 504.0705709739.

The spelling of 128077850 in words is "one hundred twenty-eight million, seventy-seven thousand, eight hundred fifty".