128016250 has 40 divisors (see below), whose sum is σ = 245171520. Its totient is φ = 50094000.

The previous prime is 128016241. The next prime is 128016257. The reversal of 128016250 is 52610821.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128016257) 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 19 ways as a sum of consecutive naturals, for example, 57661 + ... + 59839.

It is an arithmetic number, because the mean of its divisors is an integer number (6129288).

Almost surely, 2^128016250 is an apocalyptic number.

128016250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128016250 is a deficient number, since it is larger than the sum of its proper divisors (117155270).

128016250 is an equidigital number, since it uses as much as digits as its factorization.

128016250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 128016250 is about 11314.4266315178. The cubic root of 128016250 is about 503.9897458441.

It can be divided in two parts, 128016 and 250, that multiplied together give a triangular number (32004000 = T₈₀₀₀).

The spelling of 128016250 in words is "one hundred twenty-eight million, sixteen thousand, two hundred fifty".